Develop Bugs

[Q] Kernels ain't working for me

Hello there,
I've been flashing kernels since I was in LeeDroid Froyo and got no problems. However since I switched to GB based roms such as RCMix3D and TB Fusion, my phone always freezes when I try setting Kernel-Lee-V3.1.1-2.6.35.13-CALLREC or MDJs v19 to maximum overclock so I have no choice to but to stay on stock kernel. I have no ext3/ext4 partition on my SD card in case you ask.
Current ROM: TB Fusion 1.1.2
Radio: 12.54.60.25U_26.09.04.11_M2
Any idea what should I do to solve this issue?

golokipok said:
Hello there,
I've been flashing kernels since I was in LeeDroid Froyo and got no problems. However since I switched to GB based roms such as RCMix3D and TB Fusion, my phone always freezes when I try setting Kernel-Lee-V3.1.1-2.6.35.13-CALLREC or MDJs v19 to maximum overclock
Click to expand...
Click to collapse
uoooo this is sooo dangerous for your handset... u can "smoke" it...
Any idea what should I do to solve this issue?
Click to expand...
Click to collapse
yes, your handset freezes because the overclock that u do its too high... underclock it at 1200-1400mhz & try...
and configure SET CPU features... like the standby status, etc....but do it with common sense....
think about that DHD proccessor goes by default at 1gz, really when we overclock the processor we are putting in danger the security of our device

SERGI.3210 said:
uoooo this is sooo dangerous for your handset... u can "smoke" it...
yes, your handset freezes because the overclock that u do its too high... underclock it at 1200-1400mhz & try...
and configure SET CPU features... like the standby status, etc....but do it with common sense....
think about that DHD proccessor goes by default at 1gz, really when we overclock the processor we are putting in danger the security of our device
Click to expand...
Click to collapse
Haha! I know that overclocking is quite dangerous. Back on the froyo days, my phone is quite stable around 1.8ghz so I'm just wondering why is this happening (maybe my phone's processor is starting to fry up? ). Is there any effect if I'm using smartass profile on those kernels I've mentioned?

golokipok said:
Haha! I know that overclocking is quite dangerous. Back on the froyo days, my phone is quite stable around 1.8ghz so I'm just wondering why is this happening (maybe my phone's processor is starting to fry up? ).
i hope that the processor works or not works (don´t crashes a little bit...)
but the reason of your freezes maybe (almost sure) because froyo & gingerbread don´t works at the same form, and gingerbread need more resources & stability for to work correct... don´t forget that the kernel manages the hardware...
if u force it......... u know what can happen...
golokipok said:
there any effect if I'm using smartass profile on those kernels I've mentioned?
Click to expand...
Click to collapse
it´s possible, take this explanation, read and judge by yourself what´s the better cpu governor...
smartass (Best explanation i've found paraphrases to: based on interactive, but better.)
----
ondemand
Available in most kernels, and the default governor in most kernels. When the CPU load reaches a certain point (see "up threshold" in Advanced Settings), ondemand will rapidly scale the CPU up to meet demand, then gradually scale the CPU down when it isn't needed. - SetCPU website
conservative
Available in some kernels. It is similar to the ondemand governor, but will scale the CPU up more gradually to better fit demand. Conservative provides a less responsive experience than ondemand, but can save battery. - SetCPU website
performance
Available in most kernels. It will keep the CPU running at the "max" set value at all times. This is a bit more efficient than simply setting "max" and "min" to the same value and using ondemand because the system will not waste resources scanning for the CPU load. This governor is recommended for stable benchmarking. - SetCPU website
powersave
Available in some kernels. It will keep the CPU running at the "min" set value at all times. - SetCPU website
userspace
A method for controlling the CPU speed that isn't currently used by SetCPU. For best results, do not use the userspace governor. - SetCPU website
Interactive
The 'interactive' governor has a different approach. Instead of sampling the cpu
at a specified rate, the governor will scale the cpu frequency up when coming
out of idle. When the cpu comes out of idle, a timer is configured to fire
within 1-2 ticks. If the cpu is 100% busy from exiting idle to when the timer
fires then we assume the cpu is underpowered and ramp to MAX speed.
If the cpu was not 100% busy, then the governor evaluates the cpu load over the
last 'min_sample_rate' (default 50000 uS) to determine the cpu speed to ramp down
Click to expand...
Click to collapse

Thanks for the info
SERGI.3210 said:
because froyo & gingerbread don´t works at the same form, and gingerbread need more resources & stability for to work correct... don´t forget that the kernel manages the hardware...
if u force it......... u know what can happen...
Click to expand...
Click to collapse
You have mentioned about those "resources", is there any special measure that I need to do or what? I'm using the smartass profile on those kernels but still *sigh*
Anyway, I've observed on your sig that yours is overclocked @ 1.8ghz even though you're running GB, me envy

golokipok said:
have mentioned about those "resources", is there any special measure that I need to do or what? I'm using the smartass profile on those kernels but still *sigh*
Click to expand...
Click to collapse
you only should do a good over/underclock & set the correct cpu governor for your daily use....
well, you know ho is @MDeeJaay? the developer of MDJ kernels and roms...
he explained smartass with this words:
SMARTASS GOVERNOR - is based on the concept of the interactive governor.
I have always agreed that in theory the way interactive works - by taking over the idle loop - is very attractive. I have never managed to tweak it so it would behave decently in real life. Smartass is a complete rewrite of the code plus more. I think its a success. Performance is on par with the "old" minmax and I think smartass is a bit more responsive. Battery life is hard to quantify precisely but it does spend much more time at the lower frequencies.
Smartass will also cap the max frequency when sleeping to 245Mhz (or if your min frequency is higher than 245 - why?! - it will cap it to your min frequency). Lets take for example the 998/245 kernel, it will sleep at 245.
golokipok said:
, I've observed on your sig that yours is overclocked @ 1.8ghz even though you're running GB, me envy
Click to expand...
Click to collapse
no, no buddy... i only show the max speed nothing more... i set my cpu concretly like this;
CPU GOVERNOR:interactive
MAX SPEED:1113 MHZ
MIN SPEED:245 MHZ
PROFILE: screen off; 245 MHZ max.
245 MHZ min.
in adition i´m going to modify my syg LOL

haha..thanks again. I'm gonna try playing with the frequencies to see which will suit me
i hope someone can make a stable 1.8ghz kernel without the freeze

IT´S POSSIBLE but i don´t want to try it LOL
i love a lot my DHD

Setcpu and settings

Hi to all,
Yesterday I flashed a Bindroid Rom.. it seems to be very very optimal for battery consumption.
And then, to improve battery consumption, I would know:
1 - setCPU or similar: in wich way must I set to improve battery charge? (I don't interested in performance, velocity, reactivity, but ONLY on battery consumption on my DHD)
2 - setCPU or similar: what mean governor settings?
Thanks a lot

cubases said:
Hi to all,
Yesterday I flashed a Bindroid Rom.. it seems to be very very optimal for battery consumption.
And then, to improve battery consumption, I would know:
1 - setCPU or similar: in wich way must I set to improve battery charge? (I don't interested in performance, velocity, reactivity, but ONLY on battery consumption on my DHD)
2 - setCPU or similar: what mean governor settings?
Thanks a lot
Click to expand...
Click to collapse
Try ocbeater apk, seems to be simple..

To reduce battery consumption on your DHD, you might want to know exactly what each governor do. Usually it is set to ondemand in default. Ondemand raise the cpu speed gradually based on system workload. It is a balanced governor for speed and energy saving. You can adjust its threshold value and powersave bias to suit your needs.
For more energy saving, it is recommended to use conservative as your governor. It tends to reduce the cpu speed below the actual need. In other words, it sacrifices performance for more juice for your DHD.
Edit: Powersave governor is not recommended as it will force the cpu speed to the lowest speed available which mean super lag.

drpsyko said:
To reduce battery consumption on your DHD, you might want to know exactly what each governor do. Usually it is set to ondemand in default. Ondemand raise the cpu speed gradually based on system workload. It is a balanced governor for speed and energy saving. You can adjust its threshold value and powersave bias to suit your needs.
For more energy saving, it is recommended to use conservative as your governor. It tends to reduce the cpu speed below the actual need. In other words, it sacrifices performance for more juice for your DHD.
Edit: Powersave governor is not recommended as it will force the cpu speed to the lowest speed available which mean super lag.
Click to expand...
Click to collapse
Your infos are perfect. Any free app to set my cpu? Cputuner, ocuvbeater.. or?

cubases said:
Your infos are perfect. Any free app to set my cpu? Cputuner, ocuvbeater.. or?
Click to expand...
Click to collapse
As i mentioned, ocuvbeater is the easiest i've found..
Sent from my HTC Desire HD using xda premium

fshami said:
As i mentioned, ocuvbeater is the easiest i've found..
Sent from my HTC Desire HD using xda premium
Click to expand...
Click to collapse
Ok. Now I try ocuvbeater. I set to conservative but min and max freq? 245760 min and 768000 max now.. could be ok?
Sent from my HTC Desire HD

Yep, that would do just fine. Also, adding a sleep/wake profile can boost the battery life even more. Then observe and compare the battery life between now and then. Try to play with the app and fine tune the settings to suit your need.

To end this thread, please tell me if this settings are correct:
Set normal profile:
http://imageshack.us/photo/my-images/528/shot000001.png/
Set sleep profile:
http://imageshack.us/photo/my-images/51/shot000003b.png/
Set Charge profile:
http://imageshack.us/photo/my-images/822/shot000004.png/
And all my profiles apply:
http://imageshack.us/photo/my-images/225/shot000006.png/
I's correct?

cubases said:
To end this thread, please tell me if this settings are correct:
Set normal profile:
http://imageshack.us/photo/my-images/528/shot000001.png/
Set sleep profile:
http://imageshack.us/photo/my-images/51/shot000003b.png/
Set Charge profile:
http://imageshack.us/photo/my-images/822/shot000004.png/
And all my profiles apply:
http://imageshack.us/photo/my-images/225/shot000006.png/
I's correct?
Click to expand...
Click to collapse
Given that I have never use OC/UV Beater, I don't know exactly the setting is, but I could tell from the pictures that it has no sleep profile. All the other configs are all correct.

drpsyko said:
Given that I have never use OC/UV Beater, I don't know exactly the setting is, but I could tell from the pictures that it has no sleep profile. All the other configs are all correct.
Click to expand...
Click to collapse
This is the screenshot of sleep settings.. Could you see any mistake?
http://imageshack.us/photo/my-images...ot000003b.png/

The link is broken. What I meant earlier is your "sleep" profile is somewhat set on battery low trigger, not screen off.

cubases said:
To end this thread, please tell me if this settings are correct:
Set normal profile:
http://imageshack.us/photo/my-images/528/shot000001.png/
Set sleep profile:
http://imageshack.us/photo/my-images/51/shot000003b.png/
Set Charge profile:
http://imageshack.us/photo/my-images/822/shot000004.png/
And all my profiles apply:
http://imageshack.us/photo/my-images/225/shot000006.png/
I's correct?
Click to expand...
Click to collapse
Seems fine, but wake max seems to be bit less, u try increasing it to 99xxxx..

fshami said:
Seems fine, but wake max seems to be bit less, u try increasing it to 99xxxx..
Click to expand...
Click to collapse
At what profile do you refer?

cubases said:
At what profile do you refer?
Click to expand...
Click to collapse
normal profile

[q] under voltage!?!

So i just flashed the new 'code name droid' ROM and its sweet but it also comes with a overclocked kernel up to 1350 mhz and the ability to under-volt. I've heard under-volting can save on battery so i want to try it out!
SO my first question is , what are the pros and cons of playing with voltage?
second, is the amount i can change the voltage determined by each individual kernal? if so what about this one?
AND THIRD what should i under-volt my phone to and why?
also if anyone wants to share what they have volted their phone at please share!
thanks alot!

The worst thing that could happen is that your phone will not boot. Then you have to reflash. Just decrease the voltage carefully. If you notice instability, you undervolted too much.

Let me quote myself from the franco kernel thread.
Nebucatnetzer said:
No I can't.
For all the guys around here which would like to undervolt but don't have a clue how to do it right.
(I don't adress this to you jhericurls).
1. Get and app like Franco's Kernel Updater or setCPU. Both of them are working.
You need as well an app called Stabilty Test
2. Go in to your CPU control app and lock the frequency at the lowest. In our case 350Mhz.
3. Now you go to the undervolting menu. Select 350Mhz.
(Make a backup of your current voltages. In setCPU you can find the option under the voltage tab and then press the menu button.)
The correct way to undervolt would now be to lower the voltage by one step of -25mV. For impatient people like me.
Yes it is possible to take bigger steps. At least in the beginning in the end you have to do it step by step to test it properly.
Important: Do not select the "set on boot" option.
4. Go to the Stability test app and run the Classic Stability Test for a couple of minutes.
I always make at minimum 3 CPU runs.
5. Now go back to your CPU control app. And lower the voltage one step more.
6. Repeat step 4 and 5 until the phone crashes and reboots. Now go back to the voltage tab and raise the voltage by one step.
This is now your lowest "stable" voltage for 350Mhz.
7. Repeat step 2-6 with the other frequencies. When you're finished lock your frequencies how you like them or how the were before.
I recommend you to run now the Scaling Stabilit Test for a couple of minutes. Just to be sure. Now you undervolted your CPU.
IMPORTANT: As long as you're testing you voltages, NEVER, select the "set on boot" option.
If one of your voltages is to low you can end up in endless bootloops.
I don't even select it afterwards until I'm sure they're working fine. Real world usage differs from testing.
So it can happen that your phone suddenly reboots even after the testing.
It this case I recommend you to raise all voltage on step.
If you think you found a bug in the kernel and you're undervolted.
DO NOT REPORT IT. Revert back to the stock voltages, reboot and test if the bug appears again.
Click to expand...
Click to collapse
1. It could cause some instabilities but hey you're flashing custom recoveries so that shouldn't bother you too much.
2. Some kernel are setting a minimal voltage it's like the deepest possible voltage. I don't know if any kernel for the GNEX is having this function.
3. No body can help you with your values since every phone is different. Maybe yours is very good so you can go deeper the most of us.

[Noob Guide] What is and How to Undervolt

Hello, i wanna share my experience undervolting.
For people who dont know what undervolting is, its the power or energy that the battery send to the CPU with determinate clock speed.
For example:
384 Mhz is the lowest frequency of our CPU, it has a 800mv volt in the stock ROM with stock kernel.
So in theory, the battery send 800mv to the CPU when it runs at 384 Mhz.
The effect of undervolt the CPU is bassically get more battery life and at the same time reduce the temperature of the phone.Less energy send less battery used and less hot phone in our hands.
How to Undervolt
Im running Stock ROM with Ruby Kernel stable.
For undervolt you need a kernel that support it, you can do it in all rom if the kernel support that.
If you want to Undervolt, i recommend you to use Trickster MOD.
You can Undervolt maybe -50mv all frequencies and see how it goes. Some people can even in best cases undervolt -200 mv. But you need patience to test slowly.
DONT TICK SET AT BOOT IF NOT TESTED.
That why you cant:
For example if you undervolt -100mv and if not stable, and you have set at boot ticked, it will freeze the screen and after reboot it will happen again.
After you set the mv for undervolt, download from play store CPU stability test and run it.
It will test all CPU frequencies to see if it is stable.
If you dont get any SoD, congratulations its stable.
My undervolt settings are -100 or in some cases -75 mv and very stable. My battery temp is 30 C°.

Thank you very much
Sent from my LG-E975 using XDA Premium 4 mobile app

What is needed to undervolt?

Thanks for the info. What are your battery stats after undervolting? How does it suffer other operations of our mobile like browsing or gaming etc ?
Sent from my LG-E975 using xda app-developers app

You need to first make a backup, install a custom kernel, install trickster mod, and from there apply what this discussion is talking about. Good luck!
Sent from my Nexus 5 using xda app-developers app

lfuentes said:
What is needed to undervolt?
Click to expand...
Click to collapse
Bootloader unlocked with freegee and some kernel for your rom that supports undervolt.

nch26 said:
Bootloader unlocked with freegee and some kernel for your rom that supports undervolt.
Click to expand...
Click to collapse
And after that? Some specific app?

lfuentes said:
Some specific app?
Click to expand...
Click to collapse
Depends on the kernel. I am using Trickster Mod with Viper ZVC kernel. There are other control apps available -- some of them are kernel-specific, some are more universal (Kernel Tuner, Android Tuner, System Tuner, etc.). Look in your kernel's thread -- the developer usually tells which control app(s) to use with it.

nch26 said:
Hello, i wanna share my experience undervolting.
For people who dont know what undervolting is, its the power or energy that the battery send to the CPU with determinate clock speed.
For example:
384 Mhz is the lowest frequency of our CPU, it has a 800mv volt in the stock ROM with stock kernel.
So in theory, the battery send 800mv to the CPU when it runs at 384 Mhz.
The effect of undervolt the CPU is bassically get more battery life and at the same time reduce the temperature of the phone.Less energy send less battery used and less hot phone in our hands.
How to Undervolt
Im running Stock ROM with Ruby Kernel stable.
For undervolt you need a kernel that support it, you can do it in all rom if the kernel support that.
If you want to Undervolt, i recommend you to use Trickster MOD.
You can Undervolt maybe -50mv all frequencies and see how it goes. Some people can even in best cases undervolt -200 mv. But you need patience to test slowly.
DONT TICK SET AT BOOT IF NOT TESTED.
That why you cant:
For example if you undervolt -100mv and if not stable, and you have set at boot ticked, it will freeze the screen and after reboot it will happen again.
After you set the mv for undervolt, download from play store CPU stability test and run it.
It will test all CPU frequencies to see if it is stable.
If you dont get any SoD, congratulations its stable.
My undervolt settings are -100 or in some cases -75 mv and very stable. My battery temp is 30 C°.
Click to expand...
Click to collapse
Thank you, I'm using AK kernel with UKM and Synapse app from google playstore. Using E-975 (intl.). Can you suggest if I should change the global setting or the individual settings for frequencies ? I had recently (soft) bricked my phone by running benchmark at ~1900mhz CPU and 487mhz GPU (like a villain, I know. Re-connected battery to save it... phew..). I'm really cautious now and I just want it to be less hot and save some battery, that's all. Any guidance would be really appreciated... thanks

Claureid said:
Thank you, I'm using AK kernel with UKM and Synapse app from google playstore. Using E-975 (intl.). Can you suggest if I should change the global setting or the individual settings for frequencies ? I had recently (soft) bricked my phone by running benchmark at ~1900mhz CPU and 487mhz GPU (like a villain, I know. Re-connected battery to save it... phew..). I'm really cautious now and I just want it to be less hot and save some battery, that's all. Any guidance would be really appreciated... thanks
Click to expand...
Click to collapse
I dont have anymore this phone because some people stole my phone like 1 year ago. Sorry.

Oh okay, sad loss....

Is Redmi note 8 pro locked at 2 GHz normal?

i've been using this phone for about 2 years now and recently moved (about a few months ago) to using a custom rom (crdroid 7.1.2). it was running smooth and cool until day the clockspeed decided to lock itself at 2000 MHz (checked using cpu-z). I do not know if this is normal but the phone's temperature goes up to 36C on idle. i thought the problem was with the Lspeed app (+custom kernel) so i uninstalled it but it didn't work. I also factory resetting it, but still not luck. will updating the firmware resolve my issue? if not, what other available solutions are there?

have you thought about flashing the stock kernel ?

Fytdyh said:
have you thought about flashing the stock kernel ?
Click to expand...
Click to collapse
I have, but it still gets hot

do you use a case ? does your phone goes over 45 degrees celsius when charging ?

Fytdyh said:
do you use a case ? does your phone goes over 45 degrees celsius when charging ?
Click to expand...
Click to collapse
I do use a case, but hasn't been this hot before recently, and it does tend to hit 40C when charging

topsecretasian said:
I do use a case, but hasn't been this hot before recently, and it does tend to hit 40C when charging
Click to expand...
Click to collapse
If you are using Fast Charging, that heating is entirely normal (happens to me too)
But heating during idle is not normal. Try changing CPU governor to something else. (like schedutil or powersave)

Canny1913 said:
If you are using Fast Charging, that heating is entirely normal (happens to me too)
But heating during idle is not normal. Try changing CPU governor to something else. (like schedutil or powersave)
Click to expand...
Click to collapse
Do you know how to change cpu governor? I tried doing it last night but didn't find a whole lot of information. Schedutil seems to just set it all the way to 2ghz, so I want to change it to powersave

topsecretasian said:
Do you know how to change cpu governor? I tried doing it last night but didn't find a whole lot of information. Schedutil seems to just set it all the way to 2ghz, so I want to change it to powersave
Click to expand...
Click to collapse
use Rootify, select the CPU tab located at the top then change it.
The app sometimes gets stuck at Loading screen though.

Canny1913 said:
use Rootify, select the CPU tab located at the top then change it.
The app sometimes gets stuck at Loading screen though.
Click to expand...
Click to collapse
ok so it does work when i change the cpu govenor, but the only option that actually works is 'powersave' (as well as 'userspace'). all the other ones still sets it to 2GHz. 'userspace' seems to have a somewhat of an improvement but it's only setting everything to a constant value. is there a way have it set to balanced mode?

topsecretasian said:
ok so it does work when i change the cpu govenor, but the only option that actually works is 'powersave' (as well as 'userspace'). all the other ones still sets it to 2GHz. 'userspace' seems to have a somewhat of an improvement but it's only setting everything to a constant value. is there a way have it set to balanced mode?
Click to expand...
Click to collapse
powersave forces the processor to work in the lowest frequency availible, thus consuming less power.
userspace allows the app to set the CPU frequency whatever it wants. This isn't supposed to be used in Android since changing CPU speed thorough an app is super uncommon.
Others like ondemand normally keep the power low but starts using the higher frequencies if a processor intensive app is launched.
You can learn which governors do what in this post so you can set the most suitable one for you.
[REF][GUIDE]Saber's guide on CPU governors, I/O schedulers and more!
Collective guide of CPU governors, I/O schedulers and other kernel variables I present to you a wonderful collection of descriptions, comparisons and graphs of common kernel variables. Before continuing on the wonderful journey of Linux kernel...
forum.xda-developers.com

Canny1913 said:
powersave forces the processor to work in the lowest frequency availible, thus consuming less power.
userspace allows the app to set the CPU frequency whatever it wants. This isn't supposed to be used in Android since changing CPU speed thorough an app is super uncommon.
Others like ondemand normally keep the power low but starts using the higher frequencies if a processor intensive app is launched.
You can learn which governors do what in this post so you can set the most suitable one for you.
[REF][GUIDE]Saber's guide on CPU governors, I/O schedulers and more!
Collective guide of CPU governors, I/O schedulers and other kernel variables I present to you a wonderful collection of descriptions, comparisons and graphs of common kernel variables. Before continuing on the wonderful journey of Linux kernel...
forum.xda-developers.com
Click to expand...
Click to collapse
I see. Well I guess it does work as a solution.
Thanks for the help!