Related
I find the dimmest screen toggle still too bright. I find it embarrassing to use in dark public spaces.
Is there a way to dim the screen even more?
Download the screen filter app from the play store. Literally puts a filter effect on the screen to make it appear darker making it much easier to use in the dark.
Yes its possible to take the screen much lower, but we have to edit the framework. Nobody had done this mod yet for some reason.
CM9 has the ability to change the screen lowest settings built in
B97 said:
Download the screen filter app from the play store. Literally puts a filter effect on the screen to make it appear darker making it much easier to use in the dark.
Click to expand...
Click to collapse
+1. I use Screen Filter also, it's uber handy for reading at night when the light seems too bright. If you've got hardkeys like I had on my Desire, you can even turn them off.
i wrote a tutorial on how you can mod the frameworks apk. it's very easy and you can change the brightness levels to anything you want. here's the thread
screen filter only puts a transparent layer on the screen and messes with the colors. modding the frameworks will lower default brightness to any level you want. you can raise it too if you like.
Thanks for all the ideas. I went with the easiest one, Screen Filter.
AOKP also has an option to reduce screen brightness...
dynamicpda said:
Thanks for all the ideas. I went with the easiest one, Screen Filter.
Click to expand...
Click to collapse
Good man!
Sent from my GT-I9100 using XDA
neotekz said:
i wrote a tutorial on how you can mod the frameworks apk. it's very easy and you can change the brightness levels to anything you want. here's the thread
screen filter only puts a transparent layer on the screen and messes with the colors. modding the frameworks will lower default brightness to any level you want. you can raise it too if you like.
Click to expand...
Click to collapse
Great work, I've been wondering why nobody did this mod yet for the nexus. I made that same mod on my atrix, using the sgs2 thread as well. But I've been too lazy to do it for nexus.
The above mod is the best option. Screen filter doesn't achieve the same results. The above mod reduces power draw as well when on the lower brightness setting of 5 or so. Screen filter just hides the higher brightness but has same power draw.
RogerPodacter said:
Great work, I've been wondering why nobody did this mod yet for the nexus. I made that same mod on my atrix, using the sgs2 thread as well. But I've been too lazy to do it for nexus.
The above mod is the best option. Screen filter doesn't achieve the same results. The above mod reduces power draw as well when on the lower brightness setting of 5 or so. Screen filter just hides the higher brightness but has same power draw.
Click to expand...
Click to collapse
That would be correct for back-lit screens. For the Galaxy Nexus screen, though, Screen Filter does help reducing power draw as a darker screen content = lower brightness.
I used to use SF for quite a while until I got fed up of it causing stutters to most animations. After thorough examination I concluded that the Nexus's GPU is the culprit. For some reason it just doesn't like multiple graphics being updated at once. Modding the overlay XML allows it to run at full speed.
Can anyone confirm the same reduced framerate issue?. It's also the reason why some ROMs include a setting to remove the navigation buttons glow. I tested with CM9 on the SGS2 and experienced none of the stutters in cases where the GN would. Another example: sliding between sections (comments, ralated, etc.) in YouTube is laggy iff the video is playing.
fnf said:
That would be correct for back-lit screens. For the Galaxy Nexus screen, though, Screen Filter does help reducing power draw as a darker screen content = lower brightness.
I used to use SF for quite a while until I got fed up of it causing stutters to most animations. After thorough examination I concluded that the Nexus's GPU is the culprit. For some reason it just doesn't like multiple graphics being updated at once. Modding the overlay XML allows it to run at full speed.
Can anyone confirm the same reduced framerate issue?. It's also the reason why some ROMs include a setting to remove the navigation buttons glow. I tested with CM9 on the SGS2 and experienced none of the stutters in cases where the GN would. Another example: sliding between sections (comments, ralated, etc.) in YouTube is laggy iff the video is playing.
Click to expand...
Click to collapse
Agreed, GPU just isn't good enough. I hate the lag with the button glow animations on!
I use an app called root dim, it's really useful. Let's you use a brightness level of 1, which is really quite dim. Free, too.
Sent from my Galaxy Nexus using XDA App
Remoteconcern said:
Agreed, GPU just isn't good enough. I hate the lag with the button glow animations on!
I use an app called root dim, it's really useful. Let's you use a brightness level of 1, which is really quite dim. Free, too.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
Thanks for the tip, on the Galaxy Nexus it's possible to set the brightness to 0 by writing to /sys/class/backlight/*/brightness but the brightness is checked and reset to the minimum (default 10) every time the screen is turned on. I guess Root Dim works to the same effect so it runs as a system service. Still, it'd be an awesome addition for people who haven't bothered to mod.
fnf said:
That would be correct for back-lit screens. For the Galaxy Nexus screen, though, Screen Filter does help reducing power draw as a darker screen content = lower brightness.
I used to use SF for quite a while until I got fed up of it causing stutters to most animations. After thorough examination I concluded that the Nexus's GPU is the culprit. For some reason it just doesn't like multiple graphics being updated at once. Modding the overlay XML allows it to run at full speed.
Can anyone confirm the same reduced framerate issue?. It's also the reason why some ROMs include a setting to remove the navigation buttons glow. I tested with CM9 on the SGS2 and experienced none of the stutters in cases where the GN would. Another example: sliding between sections (comments, ralated, etc.) in YouTube is laggy iff the video is playing.
Click to expand...
Click to collapse
Screen filter may reduce power. But amoled screens save power with lower brightness. There is no difference between lcd vs led on this issue. And modifying the framework to bring min brightness down to 5 rather than 15 saves much more power than screen filter. Its no contest. This isn't different from lcd in this case.
---------- Post added at 03:20 PM ---------- Previous post was at 03:14 PM ----------
fnf said:
Thanks for the tip, on the Galaxy Nexus it's possible to set the brightness to 0 by writing to /sys/class/backlight/*/brightness but the brightness is checked and reset to the minimum (default 10) every time the screen is turned on. I guess Root Dim works to the same effect so it runs as a system service. Still, it'd be an awesome addition for people who haven't bothered to mod.
Click to expand...
Click to collapse
Yes we can write to that sysfs file, but it gets reset. The mod to the frameworks incorporates that backlight file so its now able to go down to 1, 2, 5, or whatever you want. It makes it now stock, so you are no longer capped at 10 (actually I think 15 is the cap I see). But that mod is just removing this cap and making it lower to whatever you want. Stock.
So no extra app is needed. No additional tweak. It now makes the stock brightness able to go down to 1 by itself whenever it needs.
Aside from the major issues that some (But certainly not all) people have been having with corruption/screen flicker there are still quite a number of minor issues that could do with a bit of work.
Live wallpaper bug w/ Rosie
Certain games that should not lag end up lagging (Despite CPU usage being quite low throughout). A good example of this is stair dismount. Shadowgun THD on the other hand runs smooth as butter. Obviously, a driver update is necessary.
Although very infrequent, the interface stutters from time to time. HTC need to fix 2D hardware rendering.
HTC Gestures causes far too many issues. It needs to be fixed, not just disabled.
Camera framerates can dip even in good lighting conditions. HTC needs to either up the bitrate or find some other way of increasing framerate. The phone and sensor are certainly capable of it.
The stock android widgets are incredibly laggy and don't update properly (The GMail widget in particular). The Sense mail widget is fine so it's certainly not for lack of performance.
If anyone else has any issues (EXCEPT FOR SCREEN FLICKERING as that doesn't affect everyone) could you please add to that list so we can send it to HTC?
I know this has been said in many threads. But the laggy scrolling between homescreens is driving me nuts. Its not bad unless you have a lot of widgets. This is even using HTCs wigets.
Download Apex and add as many wigets as you want. Smooth as butter. So the phone is more than capable of handling this.
Also - When using live wallpapers the animations stop for a sec when swiping between homescreens. This also should not happen. It also works flawlessly on apex.
I wish they would fix the unresponsive screen issue. Can't tell you how many times over the last few days I've nearly thrown the damn phone up a wall while trying to play a game and the screen has stopped registering 1 or all touches
Have you turned off HTC Gestures? I had the exact same problem until I turned it off.
-Double push headset button to skip song
-Bluetooth Audio lags
-Option to change multitask button en disable on-screen menu button
-MUCH better performance
-MUCH better power management
-Browser lags!
-Camera sensor is véry high-end, so somehow it must be the software that makes the picture look worse than my old SGS II camera. (both on default setting)
Please HTC don't dissappoint us, the hardware is perfect so don't screw up the software
There's much to be said on the internet about screen lag. I realize the most effective combative actions that affect this negative behavior require a combination of settings. Since most of us have wildly various tweaks, settings and requirements for our phones, posing a "how do I get rid of screen lag" question borders on the ridiculous. That said, what has the greatest positive effect on screen lag for your system? Oh, and details on you're settings of course
1. CPU tweaks
2. SysCtl tweaks
3. Build prop tweaks
4. OOM tweaks
5. Minimizing widgets (giving up lol)
Sent from my LT28at using xda app-developers app
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I. Thanks!
.
Disclaimer: I take no responsibility for any damage that might occur to your device. You proceed strictly at your own risk. This is a work in progress.Thank you for your interest in Plasma kernel, I hope you enjoy it. I've poured hundreds upon hundreds of hours of work into putting together a kernel that best showcases our hardware. Plasma kernel would not be possible without super-smart people like AndreiLux, DerTeufel, temasek, googyanas, faux123, and the regular contributors to the official cm kernel repositories. Please donate to them to support their hard work!.
II. Features
CPU frequency range: 100MHz to 2.16GHz
ZZMoove, PegasusQ, performance (with support for multiple cores), and LulzactiveQ CPU governors
Zen, noop, deadline, row, cfq, sio, vr schedulers
Experimental Wolfson AND Voodoo Sound support (choose one or the other on the Audio tab of STweaks, then REBOOT!)
CPU voltage control
Linux 3.0.101
AndreiLux: Screen color calibration with mdnie-control
GPU over/underclock and over/undervolt
Control the frequency and voltage of all 5 GPU steps
Support for GPU clocks from 54MHz to beyond 800MHz
Control GPU governor sampling rate
Built with 4.8 toolchain
Built with -O3 and other optimizations
Extra panel brightness (<299)
Faux123: Dynamic fsync control (v1.2)
AndreiLux: Charging control
Support for STweaks
Control screen refresh rate (can be reduced to save battery)
AndreiLux: Memory/internal voltage control interface
AndreiLux: Adaptive Body Bias (ABB) control
AndreiLux: Digital brightness control/reduction (better than ScreenFilter)
LED control (with some color mixing adjustments by me)
Touchwake support, including touchkeys (enable in Screen tab of STweaks)
Multi-touch kernel-based gesture engine
Proportional Rate Reduction for TCP
Joe's RCU
Temasek: Frandom module (enable on the Memory/Internal tab of STweaks and REBOOT!)
S-Pen settings on the S-PEN tab of STweaks
zCache
Support for 4x parallel "Turbo ZRAM" (settings are on the "I/O / RAM" tab of STweaks)
UKSM
Enhanced Touchwake/Slide2Wake functionality
Arc-swipes to turn your phone on with one hand (Screen tab of STweaks)
Long-tap-off to turn your device off with one hand (Screen tab of STweaks)
Power off gesture: tap the top of the screen and a touchkey at the same time to trigger suspend
Change your power manager (PM) CPU lock frequency
Press the home button 4 times to toggle the screen negative
Press the home buttom 3 times as fast as you can to toggle the screen into nightmode (red)
exFAT support
For more, take a look at the commits
.
III. What's NewDon't forget to check out what was new in 2.0b7 and 2.0b12!
[ZRAM Total Disk Size]: By default ZRAM is setup as four (4x) swaps operating in parallel at equal priorities. Set this to the TOTAL amount of RAM you wish to dedicate to ZRAM, and STweaks will automatically divide it evenly by four.
[UKSM Enable]: Enable the UKSM daemon that will continuously scan memory for duplicate data.
[UKSM Daemon Sampling Rate]: How often the daemon checks for duplicate data.
[UKSM CPU Usage Limit]: How much system load (CPU usage) the daemon will use.
[Long-tap-off Always On]: Found in its own section under the Touchwake section. When enabled Longtapoff will always work, regardless of how you woke your device. Takes effect immediately.
[Many ZZMoove settings]: Many ZZMoove settings on the newly created "ZZMoove Scaling" and "ZZMoove Hotplug" tabs. Descriptions coming soon.
.
IV. Download / Donate
Support the development of Plasma kernel by DONATING if you find it useful!
AOSP 4.3.x only!
Plasma kernel v2.02 for AT&T Note 2 (i317)
Plasma Gesture Pack
Support the development of Plasma kernel by DONATING if you find it useful!
.
V. Changelog
v2.02 (November 2nd, 2013)
Tracked audio/media skipping bug to disabled loggers (thanks pappschlumpf!) By default logging is now enabled. While you can still disable it, it will always be reset upon reboot.
Changes to write-back caching (thanks temasek)
Support for switching touchkey backlight driver from ROM/kernel (bottom of Screen tab in STweaks) (thanks Yank555-lu)
Some bug fixes for Slide2Wake
i317: Hopefully fixed the weird root issues
.
VI. Archived Changelogs
2013-10-29 | v2.00
Linux 3.0.101 (thanks temasek)
Hopeful bugfixes for untouchable screen, and taps on top triggering suspend
Should you encounter a problem like that, cycling on and off (power button) should now reset any state variables
Fix FC issues. Works with more ROMs, including the latest AOSP nightlies
Allow pm_idx_freq to be set as high as 1600 MHz, theoretically could slightly speed up waking from deep sleep. Set on "Plasma Tuneables" tab of STweaks
Added several new tuneable ideas to zzmoove
Added "ZZMoove Scaling" and "ZZMoove Hotplug" tabs to STweaks. The descriptions are still a work in progress
Moved mDNIe controls to their own "Color" tab
Greatly enhanced the longpressoff feature's reliability and ease of use (by upgrading to scheduled_work)
Slide2Wake and arc swipes now trigger CPU and memory frequency locks to speed up waking
Slide2Wake and arc swipes no longer accidentally send input in the milliseconds after the screen comes on, but before you finished your gesture
Added option to Screen tab of STweaks to enable Longtapoff always, regardless of how the device woken
Expanded the trigger areas for slide2wake and arc swipes
ZRAM/swap is working and compatible with "Turbo ZRAM" (4x parallel ZRAM swaps for quad core devices) (thanks googyanas)
ZRAM settings in STweaks now allows you to set one total size of RAM that will be divided into 4x ZRAM swaps. Setting to 0 disables all swaps. Changes are applied instantly. No need for any other ZRAM/swap apps or init.d scripts.
UKSM (Ultra KSM (Kernel Samepage Merging)) enabled, with settings on the "I/O / RAM" tab of STweaks. Mostly just a novelty, but what it does is continuously checks RAM for duplicate pages to save space
zCache enabled and always running
Cleancache enabled
Frontswap enabled
Enabled LOWMEM_CHECK (thanks googyanas)
Enabled SPEEDUP_KEYRESUME as discussed in temasek's thread (Placebo effect? Maybe. Better ask Brian Molko. A cookie for you if you understand that reference) (thanks googyanas)
Added my own wake-speed ideas (2-second max-CPU-speed lock, and 2-second max-bus/RAM-speed lock on KEY_POWER press)
Permanently fixed (hopefully) the laggy, skippy, media bug
Toggle negative screen mode by taping the home button 4 times quickly (but NOT as fast as you can) (based on a commit by gokhanmoral)
Toggle nightmode (red) screen mode by pressing the home button 3 times VERY quickly (pretty much as fast as you can) This is purposely designed to be a dim red, as searing bright 255 red isn't particularly easy on your eyes in the dark. Fun fact: this (and the negative one described above) are functional even during boot...triple tap to see your bootscreen turn red
CPUFreq bug fixes/commits (thanks DerTeufel)
Permanent TRIM (thanks googyanas)
Added shell scripts to quickly and easily see statistics with as little typing as possible. Open a command prompt on your device, type "su" and press enter to ascend to root. Now you can type "szc" and press enter to see zCache statistics (szc = show zcache). Or type "ssw" to see swapfile/zRAM statistics (ssw = show swap). Note: Some statistics don't fully populate until a few minutes after boot
Experimental: Set ZZMoove governor for battery savings by obtaining a root shell as described above, then typing "zzb" and pressing enter (zzb = zzmove battery). Does not reapply after reboot.
Compiler optimizations
.
VII. SourceSource for Plasma kernel can be found on my github.
XDA:DevDB Information
Plasma kernel, a Kernel for the AT&T Samsung Galaxy Note II
Contributors
ffolkes
Kernel Special Features:
Version Information
Status: Stable
Current Stable Version: 2.02
Stable Release Date: 2013-11-02
Created 2013-10-29
Last Updated 2013-11-02
Reserved
FAQ:
Q: I have no earpiece volume!
Be sure to choose Voodoo Sound or Sound Controls on the Audio tab of STweaks, then reboot.Q: I can stably run this kernel. How can I use the screen-off settings so I can save battery?
You will have to intentionally crash your system to find your lowest value, and should definitely make a nandroid first. Then be sure to turn off dynamic fsync on the bottom of the I/O tab of STweaks, as this being enabled could cause data loss from a crash. When you are done with that, the first thing will be to lower the PM Lock Frequency. Try 600MHz, press Apply, then put your device to sleep, give it a few seconds, and see if it wakes. Be sure it's going into deep sleep! If it wakes up instantly, it wasn't in deep sleep. After booting, things like mediascanner can take minutes to finish and release their partial wakelocks. If you are sure it went into deep sleep, repeat with a lower frequency until you cannot wake. Pull the battery and reboot. Once it boots up, go into STweaks and set PM Lock Frequency to the last stable frequency. You must do this before the screen goes off, or else it'll crash again when it enters deep sleep!
Now, once you are sure of your stable PM frequency, move on to the next step. Set CPU Screen-Off Max Frequency to 200MHz. Use your device for a few minutes or hours or whatever. If you find music skips too much, or calls are slow to wake up the phone, set this to 300MHz, but now be prepared for a possible SOD if your device cannot handle scaling that low. If you experience one, leave this setting at 300MHz, and enable "Keep sleep max frequency fixed" and set CPU Screen-Off Fixed Max Frequency to 200MHz. If your phone was slow to wake at 200MHz before, try setting this to 300MHz.
Err, a bit of a vestigial tail here...don't forget to set Screen-Off Frequency For Responsiveness (it's higher up in the PegasusQ Scaling tab) to whatever your lowest screen-off frequency is. It isn't needed anymore and I should have taken it out probably. Like its waking counterpart, it is a threshold below which aggressive upscaling is used. Basically, it's the frequency the CPU will want to hover at, in this case, while the screen is off.Q: Explain the PegasusQ screen-off settings.
CPU Screen-Off Max Frequency - This becomes the effective policy max as soon as you press the power button. Setting this too low may cause slow waking, or choppy music. Ideally this is just like normally setting the max policy; i.e. the governor will try to get frequencies as low as possible without going over this. This means if you get skips in your music at 200MHz, you can set this to 300MHz and the governor will be able to grab that extra power if it needs it. The problem is, some devices get finicky when they're bouncing around between sub-PM Lock frequencies and will crash. That's where the Fixed Sleep Frequency setting comes in. Read on.
Up Threshold While Screen-Off - This becomes the effective Up Threshold value as soon as you press the power button. Setting this higher will make the CPU more reluctant to scale higher (go faster).
PM Lock Frequency - This typically hardcoded value normally overrides the governor to throttle the CPU to 800MHz every time the system itself is unsuspended. This means it happens thousands of times a day, and can significantly add up after a few hours. I found different devices could handle different frequencies, so I made this is adjustable and added an interface to lulzactiveq and zzmoove. 500MHz works very stably for me.
After Boot Delay - Gives your device a grace period after booting during which none of the screen-off policies will be enforced so your start up tasks can be completed quickly.
Enable Fixed Sleep Frequency - This is where things get sorta confusing. If your device can't scale while sleeping, most likely it will be able to tolerate just sticking to one low frequency. But this has a downside...you disable the scaling logic of the governor, so you either have to suffer degraded screen-off performance (skips in your music) with a battery-saving frequency, or set this higher, but then that means you'll be pegging this higher frequency now even though you just needed it occasionally. But yay, I had an idea to put a one-way toggle in there. Read on.
CPU Screen-Off Fixed Max Sleep Frequency - So here's the thing. All devices can handle low scaling just fine, as long the screen is merely off (e.g. listening to music, etc). Once the system falls into deep sleep, that's when stability issues arise. So I had an idea... When you play music, you usually interact with the screen then turn it off, but it never actually goes into deep sleep until it's done playing. So I made it so the above Screen-Off Max Frequency will be used, including scaling, until deep sleep is called for. Then from that point on it will become fixed to this setting's frequency until you turn the screen back on, then the toggle gets reset.
v1.60 Release Notes
Control your panel refresh frequency - This is inspired by and based on AndreiLux's commits last year. Samsung includes a driver called "lcdfreq" that allows for scaling of panel refresh frequency to save power. It toggles between two states: limited and unlimited. Not all devices actively use this feature in stock builds, but it is possible to enable nonetheless. When in limited mode the panel's refresh rate is reduced from 60Hz (58 actual) to 40Hz (41 actual). I went a step further and made it so the limited mode's panel divider can be set manually (25, 27, 29, 31, 34, 37, 41, 45, 50, 60 fps). I also made it so the limited mode can now be forced, effectively allowing you to adjust the default refresh rate of your panel to save battery. Not everyone needs/wants 60fps. How much battery will this save? I don't know yet, but if you want to find out, the option is on the Screen tab of STweaks. Be sure to check the force checkbox. Very low rates will introduce flickering to some eyes (remember, this is a refresh rate being adjusted, not just fps).
Lcdfreq in PegasusQ - Note: This is irrelevant if you have decided to lock your refresh rate as described above. AndreiLux implemented this last year, and I modified it a bit and added more tunables. When enabled, PegasusQ will try to control the state of lcdfreq based on CPU load. Some of you may know AndreiLux abandoned this due to problems with flickering, but I have taken a different approach. His goal was to provide 60Hz as quickly as possible, which ended up frequently alternating between the two states. I'm aiming for the opposite - to stick with limited as long as possible and only boost it during heavy use (like a game). When bounced around between limited and unlimited too rapidly, there can be visible flickering and tearing, and different frequencies seem to slightly affect the color balance, which makes it even more noticeable. Quite possibly why Samsung doesn't use this on Note 2's.
lcdfreq_kick_in_down_delay - When PegasusQ decides it wants to call for the panel to be kicked down (into limited mode) it will have to ask this many times before actually doing it.
lcdfreq_kick_in_up_delay - When PegasusQ decides it wants to call for the panel to be boosted (into unlimited mode) it will have to ask this many times before actually doing it.
lcdfreq_kick_in_freq - Before PegasusQ will consider limiting the refresh rate, the CPU must be running at this frequency or below.
Boost lcdfreq on touch - Immediately boosts to the unlimited state, regardless of what PegasusQ calls for. A commit by AndreiLux. At some point I may add to this to make it time based (i.e. hold the boost for x amount of seconds after a touch).
Control the touchy backlight - On the Screen tab of STweaks. For ROMs that don't provide this support natively, otherwise it may be unreliable.
v1.65 Release Notes
Control your GPU - Over/underclock your GPU! Over/undervolt your GPU, too! Settings explained on the GPU tab of STweaks. Support for frequency, voltage, up/down threshold and GPU governor sampling rate.
Lock/Limit your GPU - You can lock your GPU to a specific step, or limit it to a definable maximum number of steps (e.g. 2 or 3)
Control S-Pen booster - Control/disable the S-Pen CPU booster. Stock is 800MHz, but I find that overkill.
S-Pen X,Y Axis Offset - For some reason Wacom sets this to like 30,30 depending on handedness. I have no idea why, I prefer 0,0. For most users I recommend checking the box on the S-Pen tab in STweaks and leaving the sliders at 0,0.
S-Pen Box Filter - Depending upon what you use your S-Pen for, this makes it much easier to draw shapes, but harder to do finer things, like writing. Think of it as "snap to grid".
Gestures! - Be sure to scroll down to the FAQ section to read how to use them.
Q: How do gestures work?
Flash the gesture pack and reboot. This places the action and handler scripts in /etc/init.d to be run on boot. The available gestures are listed on the Gestures tab of STweaks. You may customize the scripts, but be warned that flashing the zip again will overwrite them.
Some gestures will require you to hold down a touchkey while performing them. Be sure to have a Touchkey Modifier Delay set in STweaks (Screen tab). 100-200ms works well. Now any time you touch and hold a touchkey and then touch the screen within the delay you just set, you will activate gesture-only mode, during which the touchscreen will no longer send touch events to the operating system, only the gesture engine. This means you won't get any bleed through of gesture draws into the foreground app. It's also a safety of sorts, to prevent critical gestures from being accidentally triggered. The downside is, you can't have your cake and eat it...well, not without some delay at least. If the touchkey modifier was simply piggybacked onto the touchkey driver that would be nice, but it would also mean every time you used it, it would also report the touchkey (Menu/Back) event. Or, if you blocked it always, well then obviously your touchkeys wouldn't work anymore. So a compromise is using a very short delay, and after that delay is up, the touchkey driver checks to see if the screen has been touched and the touchkey is still down. If it has been touched, then gesture-only mode is set in the touchscreen driver until all fingers are up. If the screen has NOT been touched after the delay, then the touchkey driver assumes it's just a normal touchkey press and reports it like normal. This may seem like an insanely small delay, but it's meant for you to touch the touchkey and start drawing with another finger *simultaneously*.
tl;dr: Flash the gesture pack, go to the Screen tab and set the Touchkey Modifier Delay to 150ms or so, then apply it. Now test it. First swipe from near the bottom-left corner, up towards the middle-right side. Nothing should happen. Now repeat, this time putting a finger down on the touchkey and holding, while *at the same time* starting to drawing this simple gesture. Aim to have both fingertips touch down at the same time. If it goes well, the virtual power key will be pressed and it will go into suspend. If you have trouble, increase the delay until you get more practice. Eventually you'll be able to do this gesture one-handed by touching the touchkey with the side of your thumb, and sliding/flicking your index or middle finger outward in an arc..
Useful Apps (no affiliation):
BetterBatteryStats XDA / Play
Awesome tool that lets you see both kernel and partial wakelocks, as well as the average percent battery drain.CPU Spy XDA / Play
Provides a GUI to CPU time-in-state data.Micro CPU Monitor Play
One of my favorite apps ever, this puts a very small 1px bar across the top of the screen for each core. It can be set to come from left or right, the background can be set transparent, and the bar thickness and color are adjustable. Very useful for quickly (and discretely) noticing abnormally high CPU usage.top Play
Provides a GUI to the linux command 'top'. Provides a very reliable way to see what processes are using the most CPU time.System Monitor Play
This app makes monitoring CPU history easy, and makes it especially easy to see the effects of hotplugging tweaks because of the way it clearly displays the state of each core..
Notes:
How to use the mdnie-control interface:
AndreiLux and Slimer777 have gone to great lengths to create an extremely accurate internal color profile using a spectrophotometer. The color accuracy is terrific. Most computers and tech use a very unnaturally cool color temperature (blue tint to white), so many people are taken by surprise when they see how yellow reality actually is. You need some time to get used to the new colors, but if you are still not pleased with the result, AndreiLux has setup MANY options for you to tweak in STweaks. Personally, I recommend increasing the chroma saturation weight.
Settings can easily be configured in the STweak app now. Download it from the Play Store.
A bit about body bias:
To summarize this feature: When we traditionally change voltages (SetCPU, Performance Control, etc), we are changing the gate voltage of the transistors. This can be a difficult concept to grasp, so here's a super-simple analogy to help: Imagine a light switch instead of a transistor. You reach your finger out to flick it. The force your finger applies would be analogous to the gate voltage. However transistors also have a body voltage, which can be thought of as the resistance behind the switch. By applying a positive difference between the gate and body, (which usually, but not always, equates to reducing the body voltage) we can make the proverbial switch "looser" so it's easier to flip, but now that it's looser, it's starting to leak a small amount of current as a result. So why would we want to do this if it will be leaking more? Because now that the switch is looser, we'll hopefully need less gate voltage (aka finger pressure in the analogy) which would save more power than was lost with that leakage. Or, for someone overclocking instead of undervolting, the "loose" switch will be easier to flip, and you may achieve an overclock not possible by merely ramping up the gate voltage (brute force) in your voltage control app of choice. Basically like the old saying "two steps forward, one step back" - we get something good, but have to sacrifice a little power lost through leakage. But how about the opposite scenario? What if in the analogy you have a really strong finger? Then you're leaking power for no reason because you don't need a "loose" switch. So, we can take advantage of that fitness and tighten it up by applying a negative body bias (also called a Reverse Body Bias, or RBB). This will make the transistor harder to switch, but plug up the leak and therefore increase power efficiency.
Ok, so why does all this exist? Why not just have an enormous negative bias (RBB) from the factory and save all that power lost through leakage? Because not all chips are equal, and not all transistors on the same chip are even equal. Temperature, manufacturing techniques, a few atoms of contamination, etc can make the chip less "fit" and unable to switch as easily as others. So how do they help these weakling transistors from getting the entire chip sent to the factory garbage can? Well, on one hand the gate voltage can be increased, but that is a last resort since it would waste too much power. Before it comes to that, they get a crutch in the form of a positive body bias (also called a Forward Body Bias, or FBB), which hopefully you'll remember was the subject of the first scenario above. And remember what that does? It makes them easier to switch, but at the cost of slightly decreased power efficiency. This offers better power savings when compared to increasing the gate voltage.
Samsung knows all this, and bins their chips according the ASV level, which can be thought of as the "quality" of the chip. The higher the ASV number, the better the chip, and the less power it needs to do its job. At the factory they mix increased gate voltages with varying body voltages to end up with a table of stock body biases. Long story short, this is how they deal with less-than-perfect chips. It's a lottery for the buyer. But since their values aren't tailored to your chip - the hope is that maybe you can scrape by with a bit less power than Samsung thought a chip of that grade could. So what AndreiLux has done is implemented new scaling logic/control code that lets you adjust the body voltage, and thus the body bias. Thanks to him, we now have another tool to help us squeeze a little bit more power out of our chips.
Calculating your body bias is incredibly simple: bodybias = gatevoltage - bodyvoltage. If you know the voltage of a given frequency, you can calculate your body bias by taking the gate voltage (what it says for that frequency in your usual voltage adjustment app) and then subtracting the value of the slice that corresponds to the range the example frequency was in on the ABB tab of STweaks. This can get tricky, because people forget that "body bias" is a difference between two values. If you start off with a stock negative body bias, that is to say that your body voltage is higher than your gate voltage, increasing your body voltage will actually be increasing your bias and you'll be needlessly wasting more power. However if you start off with a positive stock body bias, adding to the body voltage will actually be decreasing your bias since it will be bringing you closer to the gate voltage.
Mine...
Sent from m
Gonna give this one a try, hopefully it plays nice with Trickster Mod.
Thanks dev.
Will this work with international model? Looks very awesome!
Had it intalled for almost 10 minutes but I already noticed that there is almost NO LAG when waking the screen. Awesome!!!
jibust said:
Had it intalled for almost 10 minutes but I already noticed that there is NO LAG when waking the screen. Awesome!!!
Click to expand...
Click to collapse
Are you getting good deep sleep? The only time the Note 2 screen wakes quickly is if it is not deep sleeping, at least from my personal experience.
BigBake88 said:
Are you getting good deep sleep? The only time the Note 2 screen wakes quickly is if it is not deep sleeping, at least from my personal experience.
Click to expand...
Click to collapse
Like a baby,
What I have noticed is an increase in the battery drain. From the screen shot, you will notice it is not actually scaling, it is either in deep sleep or at 1600 when using pegasusq. I haven't touched most of the settings so I may need to tune it a little more.
Changed to zzmove to see how it performs.
jibust said:
Like a baby,
What I have noticed is an increase in the battery drain. From the screen shot, you will notice it is not actually scaling, it is either in deep sleep or at 1600 when using pegasusq. I haven't touched most of the settings so I may need to tune it a little more.
Changed to zzmove to see how it performs.
Click to expand...
Click to collapse
I don't know why this is happening at the moment, but I do see what's causing this. In PegasusQ, up_threshold is getting set to 0. By default it should be 82. Use SetCPU or something to change the up_threshold to 82 while the PegasusQ governor is active. Or save 82 to "/sys/devices/system/cpu/cpufreq/pegasusq/up_threshold" via your favorite file manager.
ffolkes said:
I don't know why this is happening at the moment, but I do see what's causing this. In PegasusQ, up_threshold is getting set to 0. By default it should be 82. Use SetCPU or something to change the up_threshold to 82 while the PegasusQ governor is active. Or save 82 to "/sys/devices/system/cpu/cpufreq/pegasusq/up_threshold" via your favorite file manager.
Click to expand...
Click to collapse
Done, I will report back in a while. Thanks :good:
that was a great read
looking to try your kernel soon
I ran this on pacman and carbon today, losing superuser / root on both occasions.
Good work, though!
Sent from my GT-N7105 using Tapatalk 4
SwimDrewid said:
I ran this on pacman and carbon today, losing superuser / root on both occasions.
Good work, though!
Sent from my GT-N7105 using Tapatalk 4
Click to expand...
Click to collapse
No issues with root on AOKP. I flashed the supersu zip after flashing the kernel
jibust said:
No issues with root on AOKP. I flashed the supersu zip after flashing the kernel
Click to expand...
Click to collapse
Ah. Mind sharing that zip?
Sent from my GT-N7105 using Tapatalk 4
---------- Post added at 09:52 PM ---------- Previous post was at 09:50 PM ----------
SwimDrewid said:
Ah. Mind sharing that zip?
Sent from my GT-N7105 using Tapatalk 4
Click to expand...
Click to collapse
Physician, heal thyself
http://forum.xda-developers.com/showthread.php?t=1538053
Will try and report back
Sent from my GT-N7105 using Tapatalk 4
SwimDrewid said:
Ah. Mind sharing that zip?
Sent from my GT-N7105 using Tapatalk 4
---------- Post added at 09:52 PM ---------- Previous post was at 09:50 PM ----------
Physician, heal thyself
http://forum.xda-developers.com/showthread.php?t=1538053
Will try and report back
Sent from my GT-N7105 using Tapatalk 4
Click to expand...
Click to collapse
LOL, beat me to it.
jibust said:
LOL, beat me to it.
Click to expand...
Click to collapse
Gave you a thanks anyway
Zip did the trick on carbon, thanks!
Sent from my GT-N7105 using Tapatalk 4
SwimDrewid said:
Gave you a thanks anyway
Zip did the trick on carbon, thanks!
Sent from my GT-N7105 using Tapatalk 4
Click to expand...
Click to collapse
No problem, I actually always flash it. I prefer SuperSU
Amazing read ...and an amazing kernel I'm sure..
I've just downloaded ..and will flash the build shortly..
Wow...I'm baffled by the overwhelming amount of tweaks and customizations this kernel contains...
It's a true marvel ...and one I'm thoroughly going to enjoy I'm sure...
Many thanks to you..g
Sent from my SAMSUNG-SGH-I317 using XDA Premium 4 mobile app
gregsarg said:
Amazing read ...and an amazing kernel I'm sure..
I've just downloaded ..and will flash the build shortly..
Wow...I'm baffled by the overwhelming amount of tweaks and customizations this kernel contains...
It's a true marvel ...and one I'm thoroughly going to enjoy I'm sure...
Many thanks to you..g
Sent from my SAMSUNG-SGH-I317 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Check out the STweaks apps, it's a fuc**ng encyclopedia.
---------- Post added at 11:12 PM ---------- Previous post was at 11:11 PM ----------
ffolkes said:
I don't know why this is happening at the moment, but I do see what's causing this. In PegasusQ, up_threshold is getting set to 0. By default it should be 82. Use SetCPU or something to change the up_threshold to 82 while the PegasusQ governor is active. Or save 82 to "/sys/devices/system/cpu/cpufreq/pegasusq/up_threshold" via your favorite file manager.
Click to expand...
Click to collapse
Wanted to let you know that it seems the up_threshold for zzmove is 82 instead of the default 70. Could there be a mix up between the zzmove and pegasusq up_threshold values?
jibust said:
Check out the STweaks apps....
Click to expand...
Click to collapse
Uh....
It's gonna take me a week to figure out how to run this beast ....(headache starts now)...LOL
Sent from my SAMSUNG-SGH-I317 using XDA Premium 4 mobile app
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I. Thanks!
.
Disclaimer: I take no responsibility for any damage that might occur to your device. You proceed strictly at your own risk. This is a work in progress.Thank you for your interest in Plasma kernel, I hope you enjoy it. I've poured hundreds upon hundreds of hours of work into putting together a kernel that best showcases our hardware. Plasma kernel would not be possible without super-smart people like AndreiLux, DerTeufel, temasek, googyanas, faux123, and the regular contributors to the official cm kernel repositories. Please donate to them to support their hard work!.
II. Features
CPU frequency range: 100MHz to 2.16GHz
ZZMoove, PegasusQ, performance (with support for multiple cores), and LulzactiveQ CPU governors
Zen, noop, deadline, row, cfq, sio, vr schedulers
Experimental Wolfson AND Voodoo Sound support (choose one or the other on the Audio tab of STweaks, then REBOOT!)
CPU voltage control
Linux 3.0.101
AndreiLux: Screen color calibration with mdnie-control
GPU over/underclock and over/undervolt
Control the frequency and voltage of all 5 GPU steps
Support for GPU clocks from 54MHz to beyond 800MHz
Control GPU governor sampling rate
Built with 4.8 toolchain
Built with -O3 and other optimizations
Extra panel brightness (<299)
Faux123: Dynamic fsync control (v1.2)
AndreiLux: Charging control
Support for STweaks
Control screen refresh rate (can be reduced to save battery)
AndreiLux: Memory/internal voltage control interface
AndreiLux: Adaptive Body Bias (ABB) control
AndreiLux: Digital brightness control/reduction (better than ScreenFilter)
LED control (with some color mixing adjustments by me)
Touchwake support, including touchkeys (enable in Screen tab of STweaks)
Multi-touch kernel-based gesture engine
Proportional Rate Reduction for TCP
Joe's RCU
Temasek: Frandom module (enable on the Memory/Internal tab of STweaks and REBOOT!)
S-Pen settings on the S-PEN tab of STweaks
zCache
Support for 4x parallel "Turbo ZRAM" (settings are on the "I/O / RAM" tab of STweaks)
UKSM
Enhanced Touchwake/Slide2Wake functionality
Arc-swipes to turn your phone on with one hand (Screen tab of STweaks)
Long-tap-off to turn your device off with one hand (Screen tab of STweaks)
Power off gesture: tap the top of the screen and a touchkey at the same time to trigger suspend
Change your power manager (PM) CPU lock frequency
Press the home button 4 times to toggle the screen negative
Press the home buttom 3 times as fast as you can to toggle the screen into nightmode (red)
exFAT support
For more, take a look at the commits
.
III. What's NewDon't forget to check out what was new in 2.0b7 and 2.0b12!
[ZRAM Total Disk Size]: By default ZRAM is setup as four (4x) swaps operating in parallel at equal priorities. Set this to the TOTAL amount of RAM you wish to dedicate to ZRAM, and STweaks will automatically divide it evenly by four.
[UKSM Enable]: Enable the UKSM daemon that will continuously scan memory for duplicate data.
[UKSM Daemon Sampling Rate]: How often the daemon checks for duplicate data.
[UKSM CPU Usage Limit]: How much system load (CPU usage) the daemon will use.
[Long-tap-off Always On]: Found in its own section under the Touchwake section. When enabled Longtapoff will always work, regardless of how you woke your device. Takes effect immediately.
[Many ZZMoove settings]: Many ZZMoove settings on the newly created "ZZMoove Scaling" and "ZZMoove Hotplug" tabs. Descriptions coming soon.
.
IV. Download / Donate
Support the development of Plasma kernel by DONATING if you find it useful!
AOSP 4.3.x only!
Plasma kernel v2.02 for T-Mobile Note 2 (t889)
Plasma Gesture Pack
Support the development of Plasma kernel by DONATING if you find it useful!
.
V. Changelog
v2.02 (November 2nd, 2013)
Tracked audio/media skipping bug to disabled loggers (thanks pappschlumpf!) By default logging is now enabled. While you can still disable it, it will always be reset upon reboot.
Changes to write-back caching (thanks temasek)
Support for switching touchkey backlight driver from ROM/kernel (bottom of Screen tab in STweaks) (thanks Yank555-lu)
Some bug fixes for Slide2Wake
.
VI. Archived Changelogs
2013-10-29 | v2.00
Linux 3.0.101 (thanks temasek)
Hopeful bugfixes for untouchable screen, and taps on top triggering suspend
Should you encounter a problem like that, cycling on and off (power button) should now reset any state variables
Fix FC issues. Works with more ROMs, including the latest AOSP nightlies
Allow pm_idx_freq to be set as high as 1600 MHz, theoretically could slightly speed up waking from deep sleep. Set on "Plasma Tuneables" tab of STweaks
Added several new tuneable ideas to zzmoove
Added "ZZMoove Scaling" and "ZZMoove Hotplug" tabs to STweaks. The descriptions are still a work in progress
Moved mDNIe controls to their own "Color" tab
Greatly enhanced the longpressoff feature's reliability and ease of use (by upgrading to scheduled_work)
Slide2Wake and arc swipes now trigger CPU and memory frequency locks to speed up waking
Slide2Wake and arc swipes no longer accidentally send input in the milliseconds after the screen comes on, but before you finished your gesture
Added option to Screen tab of STweaks to enable Longtapoff always, regardless of how the device woken
Expanded the trigger areas for slide2wake and arc swipes
ZRAM/swap is working and compatible with "Turbo ZRAM" (4x parallel ZRAM swaps for quad core devices) (thanks googyanas)
ZRAM settings in STweaks now allows you to set one total size of RAM that will be divided into 4x ZRAM swaps. Setting to 0 disables all swaps. Changes are applied instantly. No need for any other ZRAM/swap apps or init.d scripts.
UKSM (Ultra KSM (Kernel Samepage Merging)) enabled, with settings on the "I/O / RAM" tab of STweaks. Mostly just a novelty, but what it does is continuously checks RAM for duplicate pages to save space
zCache enabled and always running
Cleancache enabled
Frontswap enabled
Enabled LOWMEM_CHECK (thanks googyanas)
Enabled SPEEDUP_KEYRESUME as discussed in temasek's thread (Placebo effect? Maybe. Better ask Brian Molko. A cookie for you if you understand that reference) (thanks googyanas)
Added my own wake-speed ideas (2-second max-CPU-speed lock, and 2-second max-bus/RAM-speed lock on KEY_POWER press)
Permanently fixed (hopefully) the laggy, skippy, media bug
Toggle negative screen mode by taping the home button 4 times quickly (but NOT as fast as you can) (based on a commit by gokhanmoral)
Toggle nightmode (red) screen mode by pressing the home button 3 times VERY quickly (pretty much as fast as you can) This is purposely designed to be a dim red, as searing bright 255 red isn't particularly easy on your eyes in the dark. Fun fact: this (and the negative one described above) are functional even during boot...triple tap to see your bootscreen turn red
CPUFreq bug fixes/commits (thanks DerTeufel)
Permanent TRIM (thanks googyanas)
Added shell scripts to quickly and easily see statistics with as little typing as possible. Open a command prompt on your device, type "su" and press enter to ascend to root. Now you can type "szc" and press enter to see zCache statistics (szc = show zcache). Or type "ssw" to see swapfile/zRAM statistics (ssw = show swap). Note: Some statistics don't fully populate until a few minutes after boot
Experimental: Set ZZMoove governor for battery savings by obtaining a root shell as described above, then typing "zzb" and pressing enter (zzb = zzmove battery). Does not reapply after reboot.
Compiler optimizations
.
VII. SourceSource for Plasma kernel can be found on my github.
XDA:DevDB Information
Plasma kernel, a Kernel for the T-Mobile Samsung Galaxy Note II
Contributors
ffolkes
Kernel Special Features:
Version Information
Status: Stable
Current Stable Version: 2.02
Stable Release Date: 2013-11-02
Created 2013-10-29
Last Updated 2013-11-02
Reserved
FAQ:
Q: I have no earpiece volume!
Be sure to choose Voodoo Sound or Sound Controls on the Audio tab of STweaks, then reboot.Q: I can stably run this kernel. How can I use the screen-off settings so I can save battery?
You will have to intentionally crash your system to find your lowest value, and should definitely make a nandroid first. Then be sure to turn off dynamic fsync on the bottom of the I/O tab of STweaks, as this being enabled could cause data loss from a crash. When you are done with that, the first thing will be to lower the PM Lock Frequency. Try 600MHz, press Apply, then put your device to sleep, give it a few seconds, and see if it wakes. Be sure it's going into deep sleep! If it wakes up instantly, it wasn't in deep sleep. After booting, things like mediascanner can take minutes to finish and release their partial wakelocks. If you are sure it went into deep sleep, repeat with a lower frequency until you cannot wake. Pull the battery and reboot. Once it boots up, go into STweaks and set PM Lock Frequency to the last stable frequency. You must do this before the screen goes off, or else it'll crash again when it enters deep sleep!
Now, once you are sure of your stable PM frequency, move on to the next step. Set CPU Screen-Off Max Frequency to 200MHz. Use your device for a few minutes or hours or whatever. If you find music skips too much, or calls are slow to wake up the phone, set this to 300MHz, but now be prepared for a possible SOD if your device cannot handle scaling that low. If you experience one, leave this setting at 300MHz, and enable "Keep sleep max frequency fixed" and set CPU Screen-Off Fixed Max Frequency to 200MHz. If your phone was slow to wake at 200MHz before, try setting this to 300MHz.
Err, a bit of a vestigial tail here...don't forget to set Screen-Off Frequency For Responsiveness (it's higher up in the PegasusQ Scaling tab) to whatever your lowest screen-off frequency is. It isn't needed anymore and I should have taken it out probably. Like its waking counterpart, it is a threshold below which aggressive upscaling is used. Basically, it's the frequency the CPU will want to hover at, in this case, while the screen is off.Q: Explain the PegasusQ screen-off settings.
CPU Screen-Off Max Frequency - This becomes the effective policy max as soon as you press the power button. Setting this too low may cause slow waking, or choppy music. Ideally this is just like normally setting the max policy; i.e. the governor will try to get frequencies as low as possible without going over this. This means if you get skips in your music at 200MHz, you can set this to 300MHz and the governor will be able to grab that extra power if it needs it. The problem is, some devices get finicky when they're bouncing around between sub-PM Lock frequencies and will crash. That's where the Fixed Sleep Frequency setting comes in. Read on.
Up Threshold While Screen-Off - This becomes the effective Up Threshold value as soon as you press the power button. Setting this higher will make the CPU more reluctant to scale higher (go faster).
PM Lock Frequency - This typically hardcoded value normally overrides the governor to throttle the CPU to 800MHz every time the system itself is unsuspended. This means it happens thousands of times a day, and can significantly add up after a few hours. I found different devices could handle different frequencies, so I made this is adjustable and added an interface to lulzactiveq and zzmoove. 500MHz works very stably for me.
After Boot Delay - Gives your device a grace period after booting during which none of the screen-off policies will be enforced so your start up tasks can be completed quickly.
Enable Fixed Sleep Frequency - This is where things get sorta confusing. If your device can't scale while sleeping, most likely it will be able to tolerate just sticking to one low frequency. But this has a downside...you disable the scaling logic of the governor, so you either have to suffer degraded screen-off performance (skips in your music) with a battery-saving frequency, or set this higher, but then that means you'll be pegging this higher frequency now even though you just needed it occasionally. But yay, I had an idea to put a one-way toggle in there. Read on.
CPU Screen-Off Fixed Max Sleep Frequency - So here's the thing. All devices can handle low scaling just fine, as long the screen is merely off (e.g. listening to music, etc). Once the system falls into deep sleep, that's when stability issues arise. So I had an idea... When you play music, you usually interact with the screen then turn it off, but it never actually goes into deep sleep until it's done playing. So I made it so the above Screen-Off Max Frequency will be used, including scaling, until deep sleep is called for. Then from that point on it will become fixed to this setting's frequency until you turn the screen back on, then the toggle gets reset.
v1.60 Release Notes
Control your panel refresh frequency - This is inspired by and based on AndreiLux's commits last year. Samsung includes a driver called "lcdfreq" that allows for scaling of panel refresh frequency to save power. It toggles between two states: limited and unlimited. Not all devices actively use this feature in stock builds, but it is possible to enable nonetheless. When in limited mode the panel's refresh rate is reduced from 60Hz (58 actual) to 40Hz (41 actual). I went a step further and made it so the limited mode's panel divider can be set manually (25, 27, 29, 31, 34, 37, 41, 45, 50, 60 fps). I also made it so the limited mode can now be forced, effectively allowing you to adjust the default refresh rate of your panel to save battery. Not everyone needs/wants 60fps. How much battery will this save? I don't know yet, but if you want to find out, the option is on the Screen tab of STweaks. Be sure to check the force checkbox. Very low rates will introduce flickering to some eyes (remember, this is a refresh rate being adjusted, not just fps).
Lcdfreq in PegasusQ - Note: This is irrelevant if you have decided to lock your refresh rate as described above. AndreiLux implemented this last year, and I modified it a bit and added more tunables. When enabled, PegasusQ will try to control the state of lcdfreq based on CPU load. Some of you may know AndreiLux abandoned this due to problems with flickering, but I have taken a different approach. His goal was to provide 60Hz as quickly as possible, which ended up frequently alternating between the two states. I'm aiming for the opposite - to stick with limited as long as possible and only boost it during heavy use (like a game). When bounced around between limited and unlimited too rapidly, there can be visible flickering and tearing, and different frequencies seem to slightly affect the color balance, which makes it even more noticeable. Quite possibly why Samsung doesn't use this on Note 2's.
lcdfreq_kick_in_down_delay - When PegasusQ decides it wants to call for the panel to be kicked down (into limited mode) it will have to ask this many times before actually doing it.
lcdfreq_kick_in_up_delay - When PegasusQ decides it wants to call for the panel to be boosted (into unlimited mode) it will have to ask this many times before actually doing it.
lcdfreq_kick_in_freq - Before PegasusQ will consider limiting the refresh rate, the CPU must be running at this frequency or below.
Boost lcdfreq on touch - Immediately boosts to the unlimited state, regardless of what PegasusQ calls for. A commit by AndreiLux. At some point I may add to this to make it time based (i.e. hold the boost for x amount of seconds after a touch).
Control the touchy backlight - On the Screen tab of STweaks. For ROMs that don't provide this support natively, otherwise it may be unreliable.
v1.65 Release Notes
Control your GPU - Over/underclock your GPU! Over/undervolt your GPU, too! Settings explained on the GPU tab of STweaks. Support for frequency, voltage, up/down threshold and GPU governor sampling rate.
Lock/Limit your GPU - You can lock your GPU to a specific step, or limit it to a definable maximum number of steps (e.g. 2 or 3)
Control S-Pen booster - Control/disable the S-Pen CPU booster. Stock is 800MHz, but I find that overkill.
S-Pen X,Y Axis Offset - For some reason Wacom sets this to like 30,30 depending on handedness. I have no idea why, I prefer 0,0. For most users I recommend checking the box on the S-Pen tab in STweaks and leaving the sliders at 0,0.
S-Pen Box Filter - Depending upon what you use your S-Pen for, this makes it much easier to draw shapes, but harder to do finer things, like writing. Think of it as "snap to grid".
Gestures! - Be sure to scroll down to the FAQ section to read how to use them.
Q: How do gestures work?
Flash the gesture pack and reboot. This places the action and handler scripts in /etc/init.d to be run on boot. The available gestures are listed on the Gestures tab of STweaks. You may customize the scripts, but be warned that flashing the zip again will overwrite them.
Some gestures will require you to hold down a touchkey while performing them. Be sure to have a Touchkey Modifier Delay set in STweaks (Screen tab). 100-200ms works well. Now any time you touch and hold a touchkey and then touch the screen within the delay you just set, you will activate gesture-only mode, during which the touchscreen will no longer send touch events to the operating system, only the gesture engine. This means you won't get any bleed through of gesture draws into the foreground app. It's also a safety of sorts, to prevent critical gestures from being accidentally triggered. The downside is, you can't have your cake and eat it...well, not without some delay at least. If the touchkey modifier was simply piggybacked onto the touchkey driver that would be nice, but it would also mean every time you used it, it would also report the touchkey (Menu/Back) event. Or, if you blocked it always, well then obviously your touchkeys wouldn't work anymore. So a compromise is using a very short delay, and after that delay is up, the touchkey driver checks to see if the screen has been touched and the touchkey is still down. If it has been touched, then gesture-only mode is set in the touchscreen driver until all fingers are up. If the screen has NOT been touched after the delay, then the touchkey driver assumes it's just a normal touchkey press and reports it like normal. This may seem like an insanely small delay, but it's meant for you to touch the touchkey and start drawing with another finger *simultaneously*.
tl;dr: Flash the gesture pack, go to the Screen tab and set the Touchkey Modifier Delay to 150ms or so, then apply it. Now test it. First swipe from near the bottom-left corner, up towards the middle-right side. Nothing should happen. Now repeat, this time putting a finger down on the touchkey and holding, while *at the same time* starting to drawing this simple gesture. Aim to have both fingertips touch down at the same time. If it goes well, the virtual power key will be pressed and it will go into suspend. If you have trouble, increase the delay until you get more practice. Eventually you'll be able to do this gesture one-handed by touching the touchkey with the side of your thumb, and sliding/flicking your index or middle finger outward in an arc..
Useful Apps (no affiliation):
BetterBatteryStats XDA / Play
Awesome tool that lets you see both kernel and partial wakelocks, as well as the average percent battery drain.CPU Spy XDA / Play
Provides a GUI to CPU time-in-state data.Micro CPU Monitor Play
One of my favorite apps ever, this puts a very small 1px bar across the top of the screen for each core. It can be set to come from left or right, the background can be set transparent, and the bar thickness and color are adjustable. Very useful for quickly (and discretely) noticing abnormally high CPU usage.top Play
Provides a GUI to the linux command 'top'. Provides a very reliable way to see what processes are using the most CPU time.System Monitor Play
This app makes monitoring CPU history easy, and makes it especially easy to see the effects of hotplugging tweaks because of the way it clearly displays the state of each core..
Notes:
How to use the mdnie-control interface:
AndreiLux and Slimer777 have gone to great lengths to create an extremely accurate internal color profile using a spectrophotometer. The color accuracy is terrific. Most computers and tech use a very unnaturally cool color temperature (blue tint to white), so many people are taken by surprise when they see how yellow reality actually is. You need some time to get used to the new colors, but if you are still not pleased with the result, AndreiLux has setup MANY options for you to tweak in STweaks. Personally, I recommend increasing the chroma saturation weight.
Settings can easily be configured in the STweak app now. Download it from the Play Store.
A bit about body bias:
To summarize this feature: When we traditionally change voltages (SetCPU, Performance Control, etc), we are changing the gate voltage of the transistors. This can be a difficult concept to grasp, so here's a super-simple analogy to help: Imagine a light switch instead of a transistor. You reach your finger out to flick it. The force your finger applies would be analogous to the gate voltage. However transistors also have a body voltage, which can be thought of as the resistance behind the switch. By applying a positive difference between the gate and body, (which usually, but not always, equates to reducing the body voltage) we can make the proverbial switch "looser" so it's easier to flip, but now that it's looser, it's starting to leak a small amount of current as a result. So why would we want to do this if it will be leaking more? Because now that the switch is looser, we'll hopefully need less gate voltage (aka finger pressure in the analogy) which would save more power than was lost with that leakage. Or, for someone overclocking instead of undervolting, the "loose" switch will be easier to flip, and you may achieve an overclock not possible by merely ramping up the gate voltage (brute force) in your voltage control app of choice. Basically like the old saying "two steps forward, one step back" - we get something good, but have to sacrifice a little power lost through leakage. But how about the opposite scenario? What if in the analogy you have a really strong finger? Then you're leaking power for no reason because you don't need a "loose" switch. So, we can take advantage of that fitness and tighten it up by applying a negative body bias (also called a Reverse Body Bias, or RBB). This will make the transistor harder to switch, but plug up the leak and therefore increase power efficiency.
Ok, so why does all this exist? Why not just have an enormous negative bias (RBB) from the factory and save all that power lost through leakage? Because not all chips are equal, and not all transistors on the same chip are even equal. Temperature, manufacturing techniques, a few atoms of contamination, etc can make the chip less "fit" and unable to switch as easily as others. So how do they help these weakling transistors from getting the entire chip sent to the factory garbage can? Well, on one hand the gate voltage can be increased, but that is a last resort since it would waste too much power. Before it comes to that, they get a crutch in the form of a positive body bias (also called a Forward Body Bias, or FBB), which hopefully you'll remember was the subject of the first scenario above. And remember what that does? It makes them easier to switch, but at the cost of slightly decreased power efficiency. This offers better power savings when compared to increasing the gate voltage.
Samsung knows all this, and bins their chips according the ASV level, which can be thought of as the "quality" of the chip. The higher the ASV number, the better the chip, and the less power it needs to do its job. At the factory they mix increased gate voltages with varying body voltages to end up with a table of stock body biases. Long story short, this is how they deal with less-than-perfect chips. It's a lottery for the buyer. But since their values aren't tailored to your chip - the hope is that maybe you can scrape by with a bit less power than Samsung thought a chip of that grade could. So what AndreiLux has done is implemented new scaling logic/control code that lets you adjust the body voltage, and thus the body bias. Thanks to him, we now have another tool to help us squeeze a little bit more power out of our chips.
Calculating your body bias is incredibly simple: bodybias = gatevoltage - bodyvoltage. If you know the voltage of a given frequency, you can calculate your body bias by taking the gate voltage (what it says for that frequency in your usual voltage adjustment app) and then subtracting the value of the slice that corresponds to the range the example frequency was in on the ABB tab of STweaks. This can get tricky, because people forget that "body bias" is a difference between two values. If you start off with a stock negative body bias, that is to say that your body voltage is higher than your gate voltage, increasing your body voltage will actually be increasing your bias and you'll be needlessly wasting more power. However if you start off with a positive stock body bias, adding to the body voltage will actually be decreasing your bias since it will be bringing you closer to the gate voltage.
Great to see a new kernel for aosp, Thanks. So far everything is running pretty good, love all the options in stweaks!
Very nice a lot greatness in the kernel. Would you consider making one for touch wiz?
Sent from my SGH-T889 using XDA Premium 4 mobile app
This kernel looks very nice, thanks.
Does this kernel allow for using USB Dock Audio? (or in other words, is there USB Audio Support without having to use the USB Audio Recorder Pro app?)
Thanks!
Awesome. Testing this out now!! Thanks for taking the time to create another Kernel for the community.
pappy97 said:
This kernel looks very nice, thanks.
Does this kernel allow for using USB Dock Audio? (or in other words, is there USB Audio Support without having to use the USB Audio Recorder Pro app?)
Thanks!
Click to expand...
Click to collapse
I believe so. It's enabled in the config, but I don't have a dock to test it on.
Testing it on the 18th PAC nightly, and is working great and flawless so far. Using Zzmove and Zen great combo. Thanks for your work! :good:
Also using on pac and it works excellent. Thanks so much OP
Sent from my SGH-T889 using Tapatalk
Can't download for some reason from my phone.
inkd86 said:
Can't download for some reason from my phone.
Click to expand...
Click to collapse
Downloaded from tapatalk just fine but no audio. I selected voodoo sound but can't download app to control. Play says voodoo app is incompatible and having trouble with apk
Sent from my GT-N7105 using Tapatalk
TeamHackura said:
Downloaded from tapatalk just fine but no audio. I selected voodoo sound but can't download app to control. Play says voodoo app is incompatible and having trouble with apk
Sent from my GT-N7105 using Tapatalk
Click to expand...
Click to collapse
You gotta sideload it
regime2008 said:
You gotta sideload it
Click to expand...
Click to collapse
Yep, just having trouble finding apk
Sent from my GT-N7105 using Tapatalk
TeamHackura said:
Yep, just having trouble finding apk
Sent from my GT-N7105 using Tapatalk
Click to expand...
Click to collapse
Here it is.
ffolkes said:
Here it is.
Click to expand...
Click to collapse
Worked! I also had to download an apk installer. I'm on cm nightly. Wouldn't install apk without. Very weird
is this Kernel for 4.2.x CM or only 4.3?
Your answer is on the first page I BELIEVE
Sent from my SGH-T889 using xda app-developers app
Somehow I never noticed this kernel before. Going to give it a run now.
thanks
Sorry it has gone so long without an update. Here is 2.04b2 for 4.3.x (Jellybean). For a change log, check the last pages of the Sprint thread.
Not sure if it is the kernel or not, but I'm on liquid smooth, and my phone will freeze and I have to do a battery pull. Has happened twice. Even after the update.
Sent from my SGH-T889 using Tapatalk