Develop Bugs

[Official][MODS LOOK!] Best kernel/ROM combinations for increased battery life!

When I first joined this forum, I was very impressed with how responsive the XDA community was to answer my questions. I have gained loads of valuable information that has helped me along my way with my EVO. I had one goal in mind; I wanted to customize and modify to increase my battery life. the Q and A forum was the first one that I turned to. I would instinctively try searching for things such as "best battery saving kernels" or "Which rom will provide me with the best battery life" and etc. Of course there are hundreds of threads with people asking these types of questions, the only problem is that they are outdated! I have only been active in this forum for a better part of 2 weeks and it seems like there is a new or beta out every other day!
Developers are quicker than ever releasing new kernels and roms so it makes it difficult to get a defined answer! I figured that the best solution to this would be to have a stickied thread with the community posting there results through testing or just opinion in general, that way it will help stop all of the "best rom" or "best kernel" threads. It would be a great resource to not only people that are new to the forum but for those looking to stay up to date with the best of the best.
Now onto the purpose of this thread.
I realize that everyones phone is different. And that what is best for one phone, may not be best for another phone.
Still I think that a generalization would be very helpful when trying to decide what's best.
Here goes:
Kernel Testing Reports: AOSP and Non AOSP Kernels here: http://home.comcast.net/~ttechnology/htc.html(Not my work, all credit goes to Skyler.
What are your favorite kernel/rom combinations for saving battery life?
Feel free to report your testing results and attach screenshots of juice plotter and etc!
Hopefully the whole XDA community can help keep this updated for reference at any point in time!
With all that said, hopefully I will catch a mods attention and have a chance of this getting stickied.

11/2/2010Myn's 2.2 with Baked Kernel #6
This was my first day testing this combination with moderate to heavy usage. Battery life was not very good for me. I will be trying this again tomorrow to give my phone time to adjust better. Screenshot attached.

Bump...report your kernel/rom history and what has worked best for you!

Well I thought it was a good idea anyways

my battery life on CM6.1. Stock kernel.

david279 said:
my battery life on CM6.1. Stock kernel.
Click to expand...
Click to collapse
That's awesome battery life...how was your usage? Like your dock btw, is that LauncherPro?

jhoffy22 said:
That's awesome battery life...how was your usage? Like your dock btw, is that LauncherPro?
Click to expand...
Click to collapse
I used it sparingly. Some twidroid, some browser, some freecell, a call or two and EVAC(great game). Yea its launcher pro. I grey'ed out everything like the status bar and notification bar. Made it gingerbread like. Or what rumors say gingerbread will look like.....

fresh 3.4, nets 4.2 bfs agressive , been getting 90ma screen off and around 200ma screen on.
i'm really interested to see other battery draw compared to mine.

david279 said:
I used it sparingly. Some twidroid, some browser, some freecell, a call or two and EVAC(great game). Yea its launcher pro. I grey'ed out everything like the status bar and notification bar. Made it gingerbread like. Or what rumors say gingerbread will look like.....
Click to expand...
Click to collapse
Very cool, hopefully more people will become involved with this thread and it can stay up to date. Thanks for you input!

i just got 1d 6hrs out of my evo.
I would categorize my usage as moderate (facebook, texting, phone calls, some game playing, maps, music playing)
Fresh 3.2 w/ launcherpro mem set to high (sense removed)
Stock Kernal 2.6.32.15-g3a8614e
Underclocked w/ SetCPU (screen off 245/screen on 652 max)
Autokiller set to "Extreme"
4g turned off most part of day since i dont get a signal at work.
Turned airplane mode on the second night (went to bed with 6% left...woke up with 6% haha).
Forgot to add
I have always on mobile turned off and background data disabled (only thing noticed with these settings is that 3G wakes up a lil slower when turning on screen and you cannot go to the market unless you turn background data which is okay for me because i pretty much have all the apps i want.)

evo4ger said:
i just got 1d 6hrs out of my evo.
I would categorize my usage as moderate (facebook, texting, phone calls, some game playing, maps)
Fresh 3.2 w/ launcherpro mem set to high (sense removed)
Stock Kernal 2.6.32.15-g3a8614e
Underclocked w/ SetCPU (screen off 245/screen on 652 max)
Autokiller set to "Extreme"
4g turned off most part of day since i dont get a signal at work.
Turned airplane mode on the second night (went to bed with 6% left...woke up with 6% haha).
Click to expand...
Click to collapse
autokiller...like the old autokiller app used back with the sprint hero. I don't think thats needed with froyo.

evo4ger said:
i just got 1d 6hrs out of my evo.
I would categorize my usage as moderate (facebook, texting, phone calls, some game playing, maps)
Fresh 3.2 w/ launcherpro mem set to high (sense removed)
Stock Kernal 2.6.32.15-g3a8614e
Underclocked w/ SetCPU (screen off 245/screen on 652 max)
Autokiller set to "Extreme"
4g turned off most part of day since i dont get a signal at work.
Turned airplane mode on the secondt (went to bed with 6% left...woke up with 6% haha).
Click to expand...
Click to collapse
Sounds like Fresh 3.2 stock is very good battery life. I have heard this before just never tried it out. 30 hours is a long time on a single charge with moderate usage.

david279 said:
autokiller...like the old autokiller app used back with the sprint hero. I don't think thats needed with froyo.[/QUOTE/
I've heard the same thing, that Froyo does a great job of managing background apps and etc. However, when I look in my systempanel app I still see a lot of background stuff running that I didn't even know about, and a ton of apps running in the background.
Click to expand...
Click to collapse

I don't get many apps running wild in the background for me. Um...

I'm pretty new to all this and just recently started trying a non-stock setup and it has been giving me really nice battery results. I don't have have any graphs or screen shots, but the first time i tried to fully drain it on purpose had me laughing hysterically. I was running 100% brightness, wifi, gps, bluetooth and pandora. The darn thing ran for like 5-6 hours straight. I couldn't believe it. seemed ridiculous.
took it to disney yesterday on a full charge. made a handfull of calls and a bunch of texts. checked the weather and a few other misc. things.
came home with 80-75 battery life. was very impressed.
i never got this kind of performance on stock.
Here's my setup:
Myn's TwoPointTwo RLS2
netarchy 4.1.9.1 NoHavs Universal
Collin_ph Battery Tweak by Myn

SpaceMonky said:
I'm pretty new to all this and just recently started trying a non-stock setup and it has been giving me really nice battery results. I don't have have any graphs or screen shots, but the first time i tried to fully drain it on purpose had me laughing hysterically. I was running 100% brightness, wifi, gps, bluetooth and pandora. The darn thing ran for like 5-6 hours straight. I couldn't believe it. seemed ridiculous.
took it to disney yesterday on a full charge. made a handfull of calls and a bunch of texts. checked the weather and a few other misc. things.
came home with 80-75 battery life. was very impressed.
i never got this kind of performance on stock.
Here's my setup:
Myn's TwoPointTwo RLS2
netarchy 4.1.9.1 NoHavs Universal
Collin_ph Battery Tweak by Myn
Click to expand...
Click to collapse
Very nice to see others having success with the battery tweak! It is still my primary go-to for when I know I count on good battery life. Did you happen to check out my guide in my signature?

well from what i read autokiller is not like a "task killer". It modifies/improves how android kills processes if that makes any sense.
been working for me...

We need to be using more descriptive scripts/apps to be comparing such.
For example my ROM is heavily stripped down/modded.
Also consider that everyone should be clearing caches and allowing them to rebuild before testing.
Not to mention anyone who has a flush active (use "top -m 5 -n 1" to see) will have much lower performance.

Neotelos_com said:
We need to be using more descriptive scripts/apps to be comparing such.
For example my ROM is heavily stripped down/modded.
Also consider that everyone should be clearing caches and allowing them to rebuild before testing.
Not to mention anyone who has a flush active (use "top -m 5 -n 1" to see) will have much lower performance.
Click to expand...
Click to collapse
How long do think your phone needs to rebuild a clean cache? A couple days or so?

jhoffy22 said:
How long do think your phone needs to rebuild a clean cache? A couple days or so?
Click to expand...
Click to collapse
Probably a couple hours of usage with some reboots in-between.

[AOKP]How to get the BEST battery of any ROM on AOKP by times_infinity

I'm tired of people going onto his AOKP thread that he worked hard to build from SOURCE for us, and discouraging his ROM. It is pretty much perfect, I have not found a single flaw, other than what Team AOKP had in their source. "Battery sucks," "This is messed up," "fix this."
No.
This is an AOSP ROM. If you don't know how to use it (as said it is for ADVANCED users), get off of it or go back to iOS. If you use it right, you'll have the best experience possible with any ROM.
Read through the thread for problems and fixes. He pointed out several times how to fix the vsync, or in other words, screen tearing. Since people don't read, i'll go over it again here.
times_infinity said:
for tearing, go into the build.prop and remove hwui.disable_vsync=true and reboot.
Click to expand...
Click to collapse
So this basically means, go into any File Explorer (preferably Root Explorer), go to root (/), go to system, turn on R/W, hold down and text edit build.prop, find the line quoted above under # ADDITIONAL BUILD PROPERTIES, change the true to false, or just delete the whole line. Easy fix for screen tearing.
Ok now to the battery part, which is what this thread was meant for. I commented into his thread before, which can be found here: http://forum.xda-developers.com/showpost.php?p=29252372&postcount=3237
Use Power Saver to turn off data when you aren't using the phone and screen is off, with 20 second delay in case I'm just replying to a text. I can easily toggle it back on by sliding the navigation bar down for half a second.
System Settings→ ROM Control→ Power Saver→ Screen off Data action+Data Action Delay
Click to expand...
Click to collapse
Also, turn off Wifi when you aren't using it. Yeah, walking into your house and auto connecting to wifi can be nice. But constantly looking for wifi signals, and constantly finding random ones kills battery. Also another luxury of the customizable toggles.
Use Hold Back To Kill option under general, to get rid of any apps you don't need out of your memory pool. It's became a habit to me to just hold back when exiting most apps. Without them in the background, battery is a lot better.
System Settings→ ROM Control→ General UI→ Hold back to Kill
Click to expand...
Click to collapse
USE AOKP SETTINGS.This is why AOKP is so great! We have all of the settings built in unlike any other ROM! Don't use 3rd party apps such as SetCPU or task killers (which believe it or not, tend to waste even more battery). What a waste of battery, when we have it built in. I like my Max CPU to be 1200 because I take advantage of my phones speed, but some people will go down to 1000. Minimum at 200.
System Settings→ ROM Control→ Performance→ Max/Min CPU
Click to expand...
Click to collapse
Undervolt. I have all of my undervolts to 75 and under, I never get freezes now. I can probably raise the higher clock speeds to lower volts also, I may experiment some more. It's always trial and error, so find out your own for best possible battery life. If it freezes, let it reboot and try again.
System Settings→ ROM Control→ Performance→ Voltage Control
Click to expand...
Click to collapse
Use the SmartassV2 governor. It's designed to be like On Demand and conservative, but the way it changes speeds of the processor is a lot better for battery.
System Settings→ ROM Control→ Performance→ Scaling governor
Click to expand...
Click to collapse
Charge to 100. Take your battery out for 5 minutes, unplug phone. Put it back in, let it boot. Battery should be more stable.
If you have anymore, please feel free to comment. I will add them to the OP.
Take advantage of this marvelous ROM he has supplied to us. People really need to stop being inconsiderate and know what they're doing before complaining. This ROM is definitely fit for a Daily Driver, and should be used by anyone who loves tweaks, speed, and good battery life.

CPU sleeper
i've been using it for a while and it helps.. dnt expect miracles though ..
EDITED:
http://tinyw.in/sYUN

JOEOZUNA4U said:
i've been using it for a while and it helps.. dnt expect miracles though ..
http://forum.xda-developers.com/showthread.php?t=1764823
Click to expand...
Click to collapse
There have been scripts to do this which would be a lot better so maybe I can find them. Most CPU/task killers/battery savers work worse in the long run.

Ive noticed my battery has been slightly better "out of the box" over stock GB.
I'll see what comes of it over teh next few weeks.

Read, read, read, read and more reading. Did I missing reading couple more times?
I was looking for screen tear issue and solution in rom thread before this got posted.. I was close to just asking it after going back few pages.. I saw it on every page that someone said its in the thread and just read it.. So eventually found it.
So peeps if you read, force will be with you!
Sent from my SPH-D710 using xda app-developers app

sockey said:
Can't believe the negative comments, I would like to give a great big thank you for this useful post. Just one question, I can not find this option...System Settings→ ROM Control→ Performance→ Voltage Control. I made all the rest of the adjustments.
Click to expand...
Click to collapse
it is probably because you didn't flash a version of TI's aokp that has that built in or it's either because you flashed a different kernel afterwards that doesn't have that option baked in, thus removing it from ROM control

sockey said:
Can't believe the negative comments, I would like to give a great big thank you for this useful post. Just one question, I can not find this option...System Settings→ ROM Control→ Performance→ Voltage Control. I made all the rest of the adjustments.
Click to expand...
Click to collapse
Hmm.. I have it. Its right after "set on boot".
Sent from my SPH-D710 using xda app-developers app

tdagraca said:
it is probably because you didn't flash a version of TI's aokp that has that built in or it's either because you flashed a different kernel afterwards that doesn't have that option baked in, thus removing it from ROM control
Click to expand...
Click to collapse
I did flash a new kernel afterwards. Thanks for explaining that for me.

I've found that flashing PhAkEer's dietpill tweaks (found in the General Section) drastically improves battery life. Another thing I do is turn off haptic feedback. Right now I'm running CM9 but I've mostly ran AOKP since I've had ICS and battery had always been a problem. Little tweaks can help change battery life. The tips section on Team Epic's website is pretty good - most of those tips work on AOKP too. Battery section is at the bottom: http://e4gtcm.blogspot.com/p/customization-guide.html

Thanks for the tearing thing, that was really my only complaint, but I love aokp and it wasn't going to stop me from using it. Now its perfect .

sockey said:
Can't believe the negative comments, I would like to give a great big thank you for this useful post. Just one question, I can not find this option...System Settings→ ROM Control→ Performance→ Voltage Control. I made all the rest of the adjustments.
Click to expand...
Click to collapse
As stated, you probably aren't on times_infinity's build. And make sure you're on the newest version.

hrffd said:
I'm tired of people going onto his AOKP thread that he worked hard to build from SOURCE for us, and discouraging his ROM. It is pretty much perfect, I have not found a single flaw, other than what Team AOKP had in their source. "Battery sucks," "This is messed up," "fix this."
[*]Also, turn off Wifi when you aren't using it. Yeah, walking into your house and auto connecting to wifi can be nice. But constantly looking for wifi signals, and constantly finding random ones kills battery. Also another luxury of the customizable toggles.
Click to expand...
Click to collapse
I need to keep my wifi on because of travel and and work. At my usual hotel, whenever wifi disconnects from their hot spot, I have to sign in again. At work it's the same. I don't know any fix other than the hot spot remembering my MAC for a little longer.
If anyone had any ideas on how to get around this, I'd be grateful.
I get decent battery life out of the box, at least as good as my EVO on CM7, but I'll give the other tweaks a try, thanks.

I can say that on the latest Time's AOKP with a little undervolting the battery life is more then exceptional. I normally undervolted -50mv on each step. Wasn't enough to cause issues but was enough to add about an hour of screen time to my daily use.
Need Help? Find us on our IRC
/server irc.flux.cd
/join #TeamRejectz
Or catch me on GTalk
[email protected]

thedarksavant said:
I need to keep my wifi on because of travel and and work. At my usual hotel, whenever wifi disconnects from their hot spot, I have to sign in again. At work it's the same. I don't know any fix other than the hot spot remembering my MAC for a little longer.
If anyone had any ideas on how to get around this, I'd be grateful.
I get decent battery life out of the box, at least as good as my EVO on CM7, but I'll give the other tweaks a try, thanks.
Click to expand...
Click to collapse
When you aren't using it having it off helps, like on the road and use the toggle unless you're using hot spots. I've never used them because I'm on 3g so I'm not sure. I've never had a problem not remembering a connection, maybe that's something hotspot does.
Sent from my SPH-D710 using xda app-developers app

sockey said:
Can't believe the negative comments, I would like to give a great big thank you for this useful post. Just one question, I can not find this option...System Settings→ ROM Control→ Performance→ Voltage Control. I made all the rest of the adjustments.
Click to expand...
Click to collapse
tdagraca said:
it is probably because you didn't flash a version of TI's aokp that has that built in or it's either because you flashed a different kernel afterwards that doesn't have that option baked in, thus removing it from ROM control
Click to expand...
Click to collapse
I do not see Voltage Control or the Smartass V2 governor.
Mod version: aokp_epic4gtouch_milestone-6
Kernel version: 3.0.15-g9d39731-dirty
I flashed a while back and honestly do not recall flashing anything other than the ROM from goo.im.

I think you may need to go the dev thread and get the latest version.
Need Help? Find us on our IRC
/server irc.flux.cd
/join #TeamRejectz
Or catch me on GTalk
[email protected]

hrffd said:
When you aren't using it having it off helps, like on the road and use the toggle unless you're using hot spots. I've never used them because I'm on 3g so I'm not sure. I've never had a problem not remembering a connection, maybe that's something hotspot does.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
Yes, it's the stupid hotspot. They want to make sure you've accepted the user agreement, so they forget your MAC every time you disconnect. It's the same at Starbucks. I've been to my local shop hundreds of times and have to accept the user agreement every freakin time.
---------- Post added at 08:34 AM ---------- Previous post was at 08:32 AM ----------
scarmon25 said:
I think you may need to go the dev thread and get the latest version.
Need Help? Find us on our IRC
/server irc.flux.cd
/join #TeamRejectz
Or catch me on GTalk
[email protected]
Click to expand...
Click to collapse
OK, thanks, will give that a try right after the USA Women's basketball game

thedarksavant said:
I do not see Voltage Control or the Smartass V2 governor.
Mod version: aokp_epic4gtouch_milestone-6
Kernel version: 3.0.15-g9d39731-dirty
I flashed a while back and honestly do not recall flashing anything other than the ROM from goo.im.
Click to expand...
Click to collapse
Smartass governor is on the newest Milestone 6 build, go reflash it just make sure to backup. I've never seen the kernel make settings not show up, it would just make it inoperable.
thedarksavant said:
Yes, it's the stupid hotspot. They want to make sure you've accepted the user agreement, so they forget your MAC every time you disconnect. It's the same at Starbucks. I've been to my local shop hundreds of times and have to accept the user agreement every freakin time.
---------- Post added at 08:34 AM ---------- Previous post was at 08:32 AM ----------
OK, thanks, will give that a try right after the USA Women's basketball game
Click to expand...
Click to collapse
Yeah that happens to me at Starbucks and McDonalds wifi, most do that and there isn't a way around it. Sorry

thedarksavant said:
I do not see Voltage Control or the Smartass V2 governor.
Mod version: aokp_epic4gtouch_milestone-6
Kernel version: 3.0.15-g9d39731-dirty
I flashed a while back and honestly do not recall flashing anything other than the ROM from goo.im.
Click to expand...
Click to collapse
you probably flashed Chris's version that's posted on goo. also source. also m6. but doesn't have voltage control. that's in times build.

I've cleaned the BS posts in here. If you do not have anything to post constructive, then do not post at all. If you have anything negative to say, then move on without saying anything.

Battery not lasting even a day after a year

using sense 2.1 virtuos 2.0.0 rom. The same on other roms.
And that is almost 1 day with only some sms and visiting forum on toilet :lol:
Should I do some kind of calibration or recharging or something ? (something rather safe)

there are o so many things that can drain a battery , roms, radios, apps, etc
you will need to get slightly more specific such as your radio, how many hours does it last between charges, how long is the screen on for? and as much detail as you can.
also if you google search for ways to improve battery life on android phones you will get a whole lot of info, most will be goo and do it. personally id say stay away from any task killers or adding apps like juice defender (all though this is debatable) but try some things out and or give some more info. worse case scenario a new battery is cheap

Not sure how many hours. But not even a whle day. And that is not more than 2 hours of usage, like typing sms or listening to mp3 + a lil camera action.
it was always about 2 days but it got worse recently.
Default virtuouous 2.00 with sense 2.1 No additional widgets etc or applications in background

HiCZoK said:
Not sure how many hours. But not even a whle day. And that is not more than 2 hours of usage, like typing sms or listening to mp3 + a lil camera action.
it was always about 2 days but it got worse recently.
Default virtuouous 2.00 with sense 2.1 No additional widgets etc or applications in background
Click to expand...
Click to collapse
I dunno. I find that hard to believe because virtuous 2.0 is very battery efficient. I got at LEAST 1 day out of it.
Sent from planet Vegeta.
---------- Post added at 08:42 PM ---------- Previous post was at 08:33 PM ----------
Try a fresh install and you can also try a few different kernels. I know eugene has a good sense one streamlined on another site. And virtuous 10 is a good one as well. Try those and see how they work out man. I'm sure you may have something eating your batt. Get betterbatterystats from the apps in android on this site and see what's eating that thing up. Hope these help.
Sent from planet Vegeta.

You can try to install Watchdog Task Manager. It will notify you if some background app is eating up your CPU.

5hours awake time. from 100% to 5%
That is sms, some browsing (forum).
screen 74% battery. 40% brightness

[Q] Phone performance

I wanted to investigate the sporadic freezing in my Galaxy S2. So, I turned on, show CPU usage under the developer's options in ICS. For reference I'm currently running Jedi Knight's latest rom.
I have attached a picture of my cpu usage while at my home screen. The number I've read to be average loads, and anything over 1.00 means trouble. I'm consistently over 10 for my one, five, and fifteen minutes averages. Also, my red bar which apparently measures time in kernel, sometimes spikes and correlates with a brief moment of unresponsiveness.
I've only seen two other screenshots and both users were under two. I was curious what everyone else's loads were. Also, let me know how frequent you have brief freezes, what kind of background apps you usually run. Include info like how many activities do you allow to run in background, do you force gpu rendering, etc. I can't wait to see other's results.
Sent from my SGH-T989

I got like 9/10/11 on mine. I always suspected that I have unusually bad battery life no matter what ROM I'm on, now I wonder if this has anything to do with it...
I'm on Eugene's Plain Jane ROM, which is an AOSP ICS ROM. The Manage Apps menu shows about 10 processes running. Force GPU is on.

ToastMan12 said:
I got like 9/10/11 on mine. I always suspected that I have unusually bad battery life no matter what ROM I'm on, now I wonder if this has anything to do with it...
I'm on Eugene's Plain Jane ROM, which is an AOSP ICS ROM. The Manage Apps menu shows about 10 processes running. Force GPU is on.
Click to expand...
Click to collapse
Thanks, for the response. Do you ever experience temporary freezes? My goal is to figure out if my mini-freezes are caused my memory or CPU.
Sorry for the bad picture quality. I posted through the android app. Anyway, I've left my phone alone for 15 minutes, and I got 8.7/8.7/8.7. I wonder if this uses a different scale than the Unix scale.

rsromano said:
Thanks, for the response. Do you ever experience temporary freezes? My goal is to figure out if my mini-freezes are caused my memory or CPU.
Sorry for the bad picture quality. I posted through the android app. Anyway, I've left my phone alone for 15 minutes, and I got 8.7/8.7/8.7. I wonder if this uses a different scale than the Unix scale.
Click to expand...
Click to collapse
Well, I wouldn't call them freezes, but sometimes performance seem to degrade for a fraction of a second and I experience like a small stutter. Doesn't seem to be unusual, but I'm not sure...

ToastMan12 said:
Well, I wouldn't call them freezes, but sometimes performance seem to degrade for a fraction of a second and I experience like a small stutter. Doesn't seem to be unusual, but I'm not sure...
Click to expand...
Click to collapse
That's normal. The only roms I know that work 100% smooth are Jelly Bean Roms on OFFICIALLY supported devices like the Nexus S and Galaxy Nexus. (Yes the Nexus S runs smoother than this phone. Not faster, smoother) but what OP is stating isn't normal in the least bit. My advice? Ditch that rom. I've never experienced such high CPU activity on any rom and its bad news. Your phone will eventually overheat and shut down. Never a good thing when the SoC gets no form of cooling.
Sent from my SGH-T989 using xda premium

RushAOZ said:
That's normal. The only roms I know that work 100% smooth are Jelly Bean Roms on OFFICIALLY supported devices like the Nexus S and Galaxy Nexus. (Yes the Nexus S runs smoother than this phone. Not faster, smoother) but what OP is stating isn't normal in the least bit. My advice? Ditch that rom. I've never experienced such high CPU activity on any rom and its bad news. Your phone will eventually overheat and shut down. Never a good thing when the SoC gets no form of cooling.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
So what do you do when CPU activity is still showing well over 1.0 (5-9) even after installing a fresh ROM? I just flashed the latest official CM10 nightly and have not installed anything other then gapps, and cpu usage is showing 9/8/5.

ToastMan12 said:
So what do you do when CPU activity is still showing well over 1.0 (5-9) even after installing a fresh ROM? I just flashed the latest official CM10 nightly and have not installed anything other then gapps, and cpu usage is showing 9/8/5.
Click to expand...
Click to collapse
Whoa.. if changing software doesn't help then you for yourself a hardware issue. If you experience lag and heat issues no matter what call tmo and get that handset replace.
Sent from my SGH-T989 using xda premium

That's the thing. I don't experience any lag and the phone is perfectly cool. It gets hot on intensive use, though.
Sent from my SAMSUNG-SGH-T989 using xda premium

I experience the exact same thing as ToastMan. My device always runs cool except when have multiple, heavy-use apps open for an extended period of time. My cpu usage percentages and used memory is always reasonable. Could it be something like an incompatible kernel? What are some debugging steps we could take? What kind of information would be valuable to you that we could provide?
Sent from my SGH-T989

rsromano said:
I experience the exact same thing as ToastMan. My device always runs cool except when have multiple, heavy-use apps open for an extended period of time. My cpu usage percentages and used memory is always reasonable. Could it be something like an incompatible kernel? What are some debugging steps we could take? What kind of information would be valuable to you that we could provide?
Sent from my SGH-T989
Click to expand...
Click to collapse
Is there a chance that maybe the reading is just wrong? Or maybe normal values on Android are different?
If several other people could just check their results and post them here it will be very helpful.

ToastMan12 said:
Is there a chance that maybe the reading is just wrong? Or maybe normal values on Android are different?
If several other people could just check their results and post them here it will be very helpful.
Click to expand...
Click to collapse
I was also thinking that it could be calibrated differently somehow. Like, if it was off by a factor of ten. My values would be much more reasonable. But I have seem several screenshots in the 1.0 range.

ToastMan12 said:
So what do you do when CPU activity is still showing well over 1.0 (5-9) even after installing a fresh ROM? I just flashed the latest official CM10 nightly and have not installed anything other then gapps, and cpu usage is showing 9/8/5.
Click to expand...
Click to collapse
Min has always been in the area of 9/9/10ish. My screen has never stuttered not even on GB, no rrs or sods on official cm10 so far either. My battery life is an entire day (16hrs) of listening to music/playing emulators nonstop.
Make sure you have the 2 idle processes in your battery. If you don't then your phone doesn't idle which will kill your battery life.
If you are using cwm non-touch make sure you use dark side tools or upgrade to touch recovery (cwm 6.x.x.x or TWRP... my favorite). Reinstall your ROM with a complete wipe, install gapps, boot it up then wait 10 mins before doing any setup.
If you are idling then look at your batt stats again... screen is probably waaaay up there... play with your brightness settings.
Hope this helped
Sent from my SAMSUNG-SGH-T989 using xda app-developers app

Relsig said:
Min has always been in the area of 9/9/10ish. My screen has never stuttered not even on GB, no rrs or sods on official cm10 so far either. My battery life is an entire day (16hrs) of listening to music/playing emulators nonstop.
Make sure you have the 2 idle processes in your battery. If you don't then your phone doesn't idle which will kill your battery life.
If you are using cwm non-touch make sure you use dark side tools or upgrade to touch recovery (cwm 6.x.x.x or TWRP... my favorite). Reinstall your ROM with a complete wipe, install gapps, boot it up then wait 10 mins before doing any setup.
Click to expand...
Click to collapse
Can you post a screenshot of your idle processes, please?

rsromano said:
Can you post a screenshot of your idle processes, please?
Click to expand...
Click to collapse
Cell standby, phone idle. They should be higher but I had my screen on several hours more than normal today (hence screen being 55%). Top reads 18 hours on, 21% battery life remaining.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app

Anyone else feels battery drains a lot faster on 4.1.2

Korean ver.
Sent from my LG-F180K using xda app-developers app

nope, same with latest 4.0.4

Much better now that it's rooted and setCPU profiles are enabled once again F180L owner.

I actually see a really nice improvement in battery life over 4.0.4. My wakelocks are now 1/4 of what they were. My problem is CPU related - cant get up (to 1.5 ghz... Throttled down to 1.1 almost all the time)

Emm, why do you need 1.5ghz?

Tim4 said:
Emm, why do you need 1.5ghz?
Click to expand...
Click to collapse
I am so confused by this question
Because, like many other people, I bought this phone in part for its processing power. I could have saved a lot of money by getting a slower but uncrippled phone (even stock gingerbread on my Galaxy S was 'good enough' for basic tasks). And yes, I have noticed lags since the speed has been mostly capped at 1.1ghz. I dont expect there to be full speed all the time, but I'd like it to be as snappy as possible when I am doing light activities with it, like web browsing. Why would anybody be content to have a 30% reduction in their phone's capabilities?
UPDATE: the lags I was experiencing seem to have been softare related. They appear to have disappeared after a clean install of JB and manual install of all apps from play store
---------- Post added at 12:24 PM ---------- Previous post was at 12:09 PM ----------
Hentitan said:
Korean ver.
Sent from my LG-F180K using xda app-developers app
Click to expand...
Click to collapse
Oh yeah. What is draining your battery? Is it a specific application or just the OS? If its the OS you can install Better Battery Stats and take a look at your kernel wakelock statistics.

Something wrong with your unit, cause mine one doesnt lag at all even on 700mhz with 2 cores disabled.
Also on 1.1ghz its still most powerfull CPU on the market, but its your way.
I believe you can disable thermal protection in service menu.

Tim4 said:
Something wrong with your unit, cause mine one doesnt lag at all even on 700mhz with 2 cores disabled.
Also on 1.1ghz its still most powerfull CPU on the market, but its your way.
I believe you can disable thermal protection in service menu.
Click to expand...
Click to collapse
Thanks for your advice to check the service menu in more depth but I didnt see the option there. I wouldnt really want to disable it if I could since it does have a use (I'd rather my battery didnt overheat and explode or something ).
Unlikely that there is something wrong with my unit. The lags arent choppy, per se, but more fractional delays that werent there before the upgrade to JB. I probably would not have said anything if I hadn't seen the phone's prior behaviour. And yes, it is my way - I like things to function as they were intended regardless of whether the current performance is "good enough". Lopping off the top multiplier almost entirely seems like a crude way to regulate the operation and temperature of the phone [.. but the new information below suggests that this isnt intentional...] . If I have to compromise at some level, I will gladly take this (nearly imperceptible) loss of function for the improved battery life I am seeing in this ROM.
Update: the weird frequencies I have been seeing have been reported by others using the same rom as me. It seems to be related to the kernel.

Here we go. Just installed setcpu to show you the service settings works. Also im able to set 100% brightness whenever i want.
I used to underclock cpu on ics, but someday ive realized LTE eats battery 10x times faster, so everything ive done with setcpu is kinda useless.
So i just dont care whats going on with cpu freq since it still lighting fast.
Also JB doesnt lag even on old 1ghz devices cause of triple buffer and forced vsync. I think you still should check your phone.
p.s. Latest F180K official rom

Tim4 said:
Here we go. Just installed setcpu to show you the service settings works. Also im able to set 100% brightness whenever i want.
I used to underclock cpu on ics, but someday ive realized LTE eats battery 10x times faster, so everything ive done with setcpu is kinda useless.
So i just dont care whats going on with cpu freq since it still lighting fast.
Also JB doesnt lag even on old 1ghz devices cause of triple buffer and forced vsync. I think you still should check your phone.
p.s. Latest F180K official rom
Click to expand...
Click to collapse
Thanks again for your advice, although that screenshot has nothing to do with the service settings and JB does lag quite a bit on older 1 Ghz devices, as I can attest by having JB running on my Samsung Galaxy S. I reinstalled JB as cleanly as possible and manually reinstalled all my usual apps from the play store and the lags seem to have disappeared. Maybe there was a problem with my recovery softare ? I edited my earlier post to reflect this, but the change in CPU frequency is still there.
As I was trying to say before, you and I are using different phones and different roms. It seems to be a recognized quirk with the rom I am using that while the phone is unplugged, the cpu frequency and screen brightness are very heavily regulated (cannot run @ 1.5 or full brightness even while phone is cool; goes away when the phone is plugged in). Please do not start telling me that 100% brightness is as unnecessary as 100% cpu frequency (I dont ever use 100%). I think you and I will just disagree on acceptable limitations of capabilities, even if I agree with you that they dont affect normal phone use at all. I see it as a mystery that needs solving.
And I am glad to hear that your phone works so well with the official rom . I could wait for official JB on the e973 but I'm impatient and Houstonn did a great job with the port.

So your phone's service menu doesnt have the High Temperature Property and the Thermal Daemon disable buttons?
You still can ask someone to disassemble korean version service menu to find the flags so you can use it on E973

Tim4 said:
So your phone's service menu doesnt have the High Temperature Property and the Thermal Daemon disable buttons?
You still can ask someone to disassemble korean version service menu to find the flags so you can use it on E973
Click to expand...
Click to collapse
There's a chance I'm still just missing it or looking for the wrong thing... Could I ask you to just take a screen shot of your menu setting for me?

Sure lol

Tim4 said:
Sure lol
Click to expand...
Click to collapse
ha ha, yeah I definitely dont have that option. Thanks a lot.
UPDATE: This fixed all problems

no hidden menu for korean versions?
Sent from my LG-F180K using xda app-developers app

Actually the screenshot is from F180K
3845#*180#