Develop Bugs

[Q] what are the best battery saving setcpu settings?

Hi, I just want apologize beforehand because I know a lot of people have asked this question before.. but what are your setcpu settings? I have setcpu 2.0.4 cm6 and snap kernel 7.11. I have calkulin's settings right now, but I still notice my battery depleting at a serious rate. Any help? I've tried the perflock disabler and that doesn't apply to me. Don't yell at me, I know its been asked a lot.

I'd like to see what others have to say because I'm new to this as well, but this is how I have it set up:
Charging/Full: 1036max/245min
Screen Off: 245max/245min
Battery <25%: 652max/245min
Battery <11%: 460max/245min
Temp > 40.0*C: 652max/245min
I see pretty good battery life numbers, but I'm sure they could be better. Like I said i really havent tested too much.

Install the new SBC kernel that works on ASOP. This should solve your problem..Either that or install a Sense rom and do mod to remove Sense.

CM7 and battery saving?

Im curious, if i need any apps like SetCPU or Cpu Tuner for CyanogenMod7.
I think somewhere i did read, that CM7 Kernel is doing all that (like undervolting/underclocking when screen is off), am i right or should i use SetCPU for better battery life?
Also if CM7 kernel is doing it, i guess its not safe to use such app as it would interfere with each other?
Thanks in advance...

I don't know the specifics but the newer CM7 builds have a built in overclocking tool more or less exactly like SetCPU. You can use that. CM7 is pretty good on battery life anyway as I can get 2 days out of it but it depends on my usage. I don't know about the kernel though but you could google it or ask thalmas.

k3lcior said:
Im curious, if i need any apps like SetCPU or Cpu Tuner for CyanogenMod7.
I think somewhere i did read, that CM7 Kernel is doing all that (like undervolting/underclocking when screen is off), am i right or should i use SetCPU for better battery life?
Also if CM7 kernel is doing it, i guess its not safe to use such app as it would interfere with each other?
Thanks in advance...
Click to expand...
Click to collapse
using set cpu is actually useless in cm7, if you want good battery click on the thread that's in my sig. ppl keep telling me that its good

deleate pls

Try juice defender.

You could try this http://forum.xda-developers.com/showthread.php?t=1081393 with a havs kernel.
I get up to 4 or 5 days with GingerVillain (It's based on CM7). I'm also using SetCPU, because the CM7 based CPU settings didn't work for me.

I think CM7 is good as is, but you can find OC option in Cyanogen Setting.

k3lcior said:
I think somewhere i did read, that CM7 Kernel is doing all that (like undervolting/underclocking when screen is off), am i right or should i use SetCPU for better battery life?
Also if CM7 kernel is doing it, i guess its not safe to use such app as it would interfere with each other?
Click to expand...
Click to collapse
All kernels can do that... app or CM7 settings are just some GUI to do it the easier way. But you can set it via terminal too

[Q] AOSP, Kernals, and a Newbie.

I am fairly new to this scene.
I recently got an EVO and decided I hated Sense so I went looking for a stock ROM. Light and fast. I have tried Cyanogenmod7 and Salvage Mod. The thing is, the battery life I am getting with these ROMs is awful. Cyanogen I was losing 20% an hour with the screen off, the phone untouched. Salvage Mod, I am down to 85% in an hour and a half.
I have read about kernals and how they can help with battery life, speed up performance, etc. What are some that I should look into using and how do I go about applying them? Is there a failsafe if its a bad flash?
Also since Sense feels so slow and bloated (to me at least) what are some other good AOSP ROM's out there? That have a little more to it but is not loaded down with unnecessary tools I will never use.

Personally I run:
rom: CM7 Nightlies
Kernel: Tiamat 4.0.6 [3.3.7 is the GOD of battery life]
Mods: Viper mod, undervolted at 825mv floor and -100mv
CPU: Under clocked at 128 min and 537 max
Many people use my setup now and get great results, so I would recommend it to you.

teh roxxorz said:
Personally I run:
rom: CM7 Nightlies
Kernel: Tiamat 4.0.6 [3.3.7 is the GOD of battery life]
Mods: Viper mod, undervolted at 825mv floor and -100mv
CPU: Under clocked at 128 min and 537 max
Many people use my setup now and get great results, so I would recommend it to you.
Click to expand...
Click to collapse
Doesnt the nightly ROM tend to have more issues or do they run better than the stable builds?
What are the Mods? Viper, and then what does it mean undervolted at 825mv floor and -100mv?
Thanks for the help thus far!

mods = modification type tools
viperMOD is a mod put out by viperboy. it allows you to undervolt your kernel.
less voltage should translate to less battery consumption. take your time and read the post, it may look intimidating but it's rather simple. NOTE: if you lower your voltage too much your EVO will get stuck at the boot screen during the next reboot. do not fear...simply go into recovery and reflash your nightly this will reset your voltages. i'd suggest lowering the voltage in increments of 25 or 50 till it hangs then raise it by 25. run with that for a few days to see how it feels.
you may want to look at the Supercharger script (see signature), its not a battery saving mod, its more for memory management and system responsiveness. again, the OP looks intimidating but a reflash will reset your system. (ie: you will have to rerun both ViperMOD and SuperCharger each time you flash a new nightly)
nightly's may or may not be more stable than the RC. it all depends on what was added the day before. the easiest way to find a good nightly is to scan thru the nightly thread for a nightly that is a day or two old...if it causes issues folks will cry and moan in that thread...once you get a nightly that works well for you i'd suggest you stick with it until the link below indicates a new feature or fix that you need/want.
this page will list the EVO related changes included in the latest nightly
http://cm-nightlies.appspot.com/?device=supersonic
see signature links to viper, super and nightly threads.
have fun.

Salvage is awesome. Extremely light and plays well with V6 Scripts. Try them all out, give them a least a couple of days each.

How long does it take for the battery life to stabilize? Its looking like Salvage is averaging out to about 10% an hour, but I know I could do a whole lot better than that.
Any other Mods, kernals, or ROMs (especially AOSP) you guys would recommend?

billymayshere said:
How long does it take for the battery life to stabilize? Its looking like Salvage is averaging out to about 10% an hour, but I know I could do a whole lot better than that.
Any other Mods, kernals, or ROMs (especially AOSP) you guys would recommend?
Click to expand...
Click to collapse
After flashing a rom, charge the phone up to 100%, then go into recovery and wipe the battery stats; you'll see the change in roughly 2-3 days, as it has to 'settle' in.

note: there is a difference between a SBC and nonSBC kernel. this has to do with charging the battery. there are some folks that do like/trust SBC and others (myself included) that appreciate SBC. basically, SBC pretty much ensures that if you plug in your phone at night before you sleep when you take it off the charger in the morning you will have 100% battery to work with. Stock (or nonSBC kernels) will charge to 100% then stop charging and drain to 90% then charge to 100% rinse repeat. this means that when you take it off the charger you will have somewhere between 90-100% charge.
also, keep note of which applications are sync'ing and at what interval.
for example: do you need facebook to sync each hour? do you need weather to sync each hour? etc.

Also you might want to try SavagedZen RC4 and/or its kernels. They have built in HAVS (like Vipermod) and on the fly SBC (you can just uncheck and check it off)..

Jakister, do you have a link to that ROM? Reading up on it, it sounds awesome. I followed the main thread and the link to download it is dead
Nevermind, it must have just been down when I tried to DL it.

Try this one: http://mirror.savaged-zen.com/ forgot abt that dead link..happened to me when u try it from "mirror" instead from "download now" link. Works?

That one worked! I have flashed the Tiamat (sp?) kernal and the battery life was great for awhile but then it started to dive again. Also, the GPS could never grab ahold on the Cyogen mod. One of these days I will get it right!
Any other AOSP kernals you guys would recommend me look into? I also have the smartass governor on and have my CPU marked to go from 245-729. Do I need to make that lower? I figured 729 was a good compromise from 998
Any other AOSP Roms you guys would recommend?
I have looked at
Salvage Mod
Savaged Zen
Cyanogen Mod
Are there any other ones worth looking into? I think I need to figure out undervolting or find a better kernal

My Configuration
Savaged-Zen kernels have a new download server which can be found here: http://sz.munkibizness.com/ I personally use MIUI with a Savaged-Zen kernel along with viperMOD and Supercharger V6 for speed and simplicity.

How do Vipermod and Supercharger work exactly? You change the settings for those in the Terminal?

Yes, you change the settings for them in the Terminal. However, for vipermod, I use Terminal Emulator (available free in the Market) and for Supercharger V6 I use Script Manager (available free in Market also) and BusyBox Installer (in Market). For BusyBox Installer, make sure you have 1.18.2 or lower installed from within the app.

Battery ??

I'm down to 25% after only nine hours and I don't understand why.. Lol I'm confused for real I thought rooting would improve it. And I've only actually used the phone for probably 50 minutes. Any help or suggestions
Sent from my Dinc running cm7 with incredikernel

search around for suggestions. to start off control data usage,sync control,use auto brightness,turn toggles off you don't need uninstall or freeze apps especially those that run in background for no reason that fail to cache. use a different kernel. do some undervolting. overclock and underclock when necessary.use tasker to setup screen off/on profiles for different min/max frequency ranges and governor selection,use apps to monitor usage such as drain guard and cpu spy. check apps that hog too much unwanted usage. the list goes on. if you do your research you could save yourself 70% of battery usage. using tasker alone saved me around 30%. for example my phone is fully charged before bed,I sleep about 6-8 hours while listening to music and I have about 80% once I'm awake.nothing on besides the phone's cellular radio,no gps,no data on,no 3g,no wifi,etc. not even airplane mode so sms isn't queued all night. tasker can also auto turn off gps once gps based apps are killed so it's not always on,plenty of threads on battery saving tips,majority aren't all device specific so they're universal tips

wayneb02 said:
I'm down to 25% after only nine hours and I don't understand why.. Lol I'm confused for real I thought rooting would improve it. And I've only actually used the phone for probably 50 minutes. Any help or suggestions
Sent from my Dinc running cm7 with incredikernel
Click to expand...
Click to collapse
Rooting by itself won't do anything for battery life.

douger1957 said:
Rooting by itself won't do anything for battery life.
Click to expand...
Click to collapse
I thought the kernel helped it. But Never mind on this post, I didn't realize that a friend downloaded a couple of apps that were running constantly in the background.
Sent from my Dinc running cm7 with incredikernel

wayneb02 said:
I thought the kernel helped it. But Never mind on this post, I didn't realize that a friend downloaded a couple of apps that were running constantly in the background.
Sent from my Dinc running cm7 with incredikernel
Click to expand...
Click to collapse
agreed rooting won't do anything for your phone unless you put it to good use (uninstalling bloat apps, loading a custom more battery and performance efficient kernel, same with a better ROM, as well as countless performance/battery mods)
There are so many ways to improve performance and battery life on your phone with root, but you have to actually apply them to your phone.

POQbum said:
agreed rooting won't do anything for your phone unless you put it to good use (uninstalling bloat apps, loading a custom more battery and performance efficient kernel, same with a better ROM, as well as countless performance/battery mods)
There are so many ways to improve performance and battery life on your phone with root, but you have to actually apply them to your phone.
Click to expand...
Click to collapse
What do you mean battery mods? I'm new to all of this in case you can't tell lol
Sent from my Dinc running cm7 with incredikernel

wayneb02 said:
What do you mean battery mods? I'm new to all of this in case you can't tell lol
Sent from my Dinc running cm7 with incredikernel
Click to expand...
Click to collapse
well I probably worded that wrong. There's mods you can do that will improve battery performance.
Check here and scroll down to the bottom where it shows performance mods:
http://forum.xda-developers.com/showthread.php?t=969371
As a personal suggestion.
ROM: CM7 latest nightly
after you flash the ROM, flash the latest Gingerbread [AOSP] kernel:
http://www.incredikernel.com/?page_id=10
2.6.38.8 incredikernel 10/08/2011 (3277)
Then apply:
Adrenaline Shotv12.zip - found on
http://forum.xda-developers.com/showthread.php?t=1236779
Convert2Ext4_no_data_limit_dalvik_moved.zip - found on
http://forum.xda-developers.com/showthread.php?t=1315372
Then proceed to uninstall the crap apps you don't want.
Then customize the mutha lovin hell out of your phone with these apps:
Widget Locker
Launcher Pro Plus -or- Go Launcher
And use Android Kitchen to finish the sexification of your phone:
http://uot.dakra.lt/
You'll end up with an amazing phone that you'll cherish forever <3

POQbum said:
well I probably worded that wrong. There's mods you can do that will improve battery performance.
Check here and scroll down to the bottom where it shows performance mods:
http://forum.xda-developers.com/showthread.php?t=969371
As a personal suggestion.
ROM: CM7 latest nightly
after you flash the ROM, flash the latest Gingerbread [AOSP] kernel:
http://www.incredikernel.com/?page_id=10
2.6.38.8 incredikernel 10/08/2011 (3277)
Then apply:
Adrenaline Shotv12.zip - found on
http://forum.xda-developers.com/showthread.php?t=1236779
Convert2Ext4_no_data_limit_dalvik_moved.zip - found on
http://forum.xda-developers.com/showthread.php?t=1315372
Then proceed to uninstall the crap apps you don't want.
Then customize the mutha lovin hell out of your phone with these apps:
Widget Locker
Launcher Pro Plus -or- Go Launcher
And use Android Kitchen to finish the sexification of your phone:
http://uot.dakra.lt/
You'll end up with an amazing phone that you'll cherish forever <3
Click to expand...
Click to collapse
All of this.
-My life is a shooting range, people never change-

Thanks a lot, guess I'm gonna have a fun playing with my phone tonight lol.
Sent from my Dinc running cm7 with incredikernel

before i flash adrenaline am i supposed to wipe anything?

Rooting doesn't improve battery life. usually a custom kernel or rom will improve battery life. It all depends what you are running in the background. With Nil's Gingersense 3.5 (2.2) and tiny's latest kernel I am getting unbelievable battery life. This is in part to how well both of these things work together along with the removal of all the bloatware. I have found that if you run Yahoo IM, it tends to kill your battery faster as well. Make sure to set most of your sync options to manual or every few hours as well. It won't impact your gmail or gtalk settings.

I understood that just rooting wouldn't change a thing. I just miss worded it lol. I was already running cm7 and incredikernel. I just hadn't realized I had 2 apps running in the background killing my battery

just flashed tinys last night and waiting to see how it works. I have two batteries and one lasts much better than the other and they have both been treated the same as far as charging and discharging....

Installed kernel, now buggy sound on video.

Hi guys,
I'm a bit of a noob so please bear with me. I recently rooted my phone (SGH-I747M Telus), I have CWM recovery installed. I was interested in overclocking so I installed this kernel on my stock rooted rom (I installed the "sammy" one). I also cleared the delvik cache, cache, and fixed permissions before rebooting. Now I'm having a weird problem with video playback. I get these bleep like sounds, like you might hear on a spaceship, lol. The normal audio plays in addition to these sounds. Yet, regular audio plays fine (mp3s), same with youtube. So, my question is, why? Is there any way of fixing this? I'd rather not play around the stock ROM. I made a backup before doing anything and recently tried to restore the boot, but I got an invalid md5 check.
-JC

Okay, I was able to fix my problem by flashing the stock at&t kernel... but I would still like to be able to overclock... is there another kernel that I can try or a way to fix the problem with the kernel I already tried? Thanks.

If you still want to try previous kernel your problem might be because of heavy undervolting , kernel creator posted this voltage chart.
You can experiment by increasing voltage and see if that helps.
Or you can just try this faux kernel , its pretty good also, we don't have many kernel choices for Samsung based roms at this early development cycle.

ghost77 said:
If you still want to try previous kernel your problem might be because of heavy undervolting , kernel creator posted this voltage chart.
You can experiment by increasing voltage and see if that helps.
Or you can just try this faux kernel , its pretty good also, we don't have many kernel choices for Samsung based roms at this early development cycle.
Click to expand...
Click to collapse
Thanks for the reply... but I was able to fix the problem. It was something wrong with the settings of SetCPU which I installed earlier. I changed it from on demand to performance and now all is well. Now I have a question about battery life. Will overclocking drain battery a lot faster? I imagine it would only make a difference if I was doing CPU intensive things.

JustChillin1414 said:
Thanks for the reply... but I was able to fix the problem. It was something wrong with the settings of SetCPU which I installed earlier. I changed it from on demand to performance and now all is well. Now I have a question about battery life. Will overclocking drain battery a lot faster? I imagine it would only make a difference if I was doing CPU intensive things.
Click to expand...
Click to collapse
Well.. performance setting makes it so that your CPU runs 100% all the time. I don't think that will be battery friendly . Overclock generally uses more power and battery longevity will depend on your usage.
You can try messing with setcpu settings. Try Conservative, then limit minimum speed to 384 and max to your preference. Try your movie again.
Current kernels and setcpu are a bit quirky.

I had the same issues on ktoonsez Sammy. Ended up back at stock AT&T. I've heard it's an issue with many of the kernels but a fix is on the way. Couldn't find a way to get rid of it, but that's not to say it can't be done. Don't have much time to tinker right now.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Its a known issue on ktoonsez kernel. Flash faux's kernel, it has the same features (as well as GPU OC) and doesn't have the audio issue.