Develop Bugs

[Q] [POLL] Kernel with best battery life on CDMA Gnex

Which kernel do you think gives you the best battery life on your CDMA Gnex?
Please post the kernel/ROM you are using as well. Thanks!

I've tried all and I'm gonna have to say lean kernal does the best for me
Sent from my Galaxy Nexus using XDA

gregh530 said:
Which kernel do you think gives you the best battery life on your CDMA Gnex?
Please post the kernel/ROM you are using as well. Thanks!
Click to expand...
Click to collapse
I have tried all too and I find there is virtually no difference when I'm using either AOKP, Black Ice or DroidTh3ory's roms (yes I know they are all essentially the same!). My favorites are IMO's and Franco's kernels due to their smoothness and color options.

Leankernel for sure.

Lean kernel
Sent from my SCH-I510 using xda premium

+1 Franco..
Sent from my Galaxy Nexus using Tapatalk

Kenerl Options As Well?
For those suggesting what kernel they think is best, would it be good to include what options you have configured that lead you to the battery savings?

+1 for leankernel, but certainly not v2.5.0 from March. 4.2.0 instead.

Air kernel has literally doubled my battery life compared to all other kernels on jb. With it I get the battery life is was with ics. 1200 max 234 min smartass2 governor sio scheduler
Sent from my Galaxy Nexus using xda premium

I've been using the latest James Bond kernel for 4.1.1 and get around 3 hours of screen time and haven't really got to test the full standby time. I was at 22 hours of standby this morning with 77% battery left. I have my CPU set at 1.2ghz with the interactive governor and have been using the cfq scheduler (default setup). I think I'm going to give that air kernel a go and see if I can get better performance.
Sent from my 007 Vicious JB powered Galaxy Nexus

[KERNEL] Adama 003

Heyo
I've compiled a *very* simple kernel for our phones just to play with
001
- O/C to 1.8ghz by default
- insecure
002
- should boot up to 1.5 by default (read more on this below the log)
- raised max clock to 1.89GHz
- lowered voltage on a many frequencies
- added init.d support (busybox needs to be installed to /system/xbin!)
Also I'd suggest having your OC app (like SetCPU) go ahead and set your clock at whatever you want your max to be. thermald (a service which watches your phones temp and lowers it if it gets too hot) seems to be messing with the clocks until you set one after it's all booted. So if you don't want to OC, just set it to 1512000 in the app and click "Set on boot" option or whatever it may be.
003
- fixed kernel not being insecure
- sped up L2 cache
- more uv for 648000 and 702000 frequencies
================================================================
More to come as I play with it. Seems pretty stable (and warm!) at 1.8 ghz.
Thanks to faux123 & mdeejay for helping me out with a few things
Flash at your own risk. Make sure you have a NANDROID backup. Flashing the stock kernel via ODIN may not be enough to restore your device. You've been warned
Installation instructions
Reboot into recovery
Wipe cache
Wipe dalvik-cache
Flash kernel zip
Reboot
Download Adama 003 mirror

Awwwww yeaaaaaa!!!!

Awesome thanks roman. Just saw this on twitter.. downloading now edit it works roman , what would you or i need to do to add bootanimation.zip support thanks again

I love you roman!
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

nice job Roman! my buddy has a Galaxy nexus and he swears by your AOKP ROM. shouldn't be too long for that now that we have our first booting kernel?

Nice work and nice to see you around. Thanks!
Sent from my SGH-T999 using xda premium

Excellent.... it works..... Awesome Roman.... Glad you are better at this than Chemistry....... (inserted goofy emoticon)

Roman you are the man!. Let's get some serious dev power on this phone!
---------- Post added at 03:51 PM ---------- Previous post was at 03:39 PM ----------
Just flashed. I works great. My quadrant scores have dropped from stock though.

Radsolutionz said:
Roman you are the man!. Let's get some serious dev power on this phone!
---------- Post added at 03:51 PM ---------- Previous post was at 03:39 PM ----------
Just flashed. I works great. My quadrant scores have dropped from stock though.
Click to expand...
Click to collapse
It's hit or miss for me. There's a lot to do though. This is just the first step. Also I'm no kernel dev
Sent from my SGH-T999 using Tapatalk 2

Thanks for the kernel Roman! I'm lovin' it! Can't wait to see what else you have in store for us in the future. :good:

Just curious Roman and wh. Is faux gonna get the s3?
Sent from my SGH-T999 using xda app-developers app

fatboy547 said:
Just curious Roman and wh. Is faux gonna get the s3?
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
Roman, you are AMAZING! I'm so happy to see the first custom kernel on the SGS3 (US)!!
As for quadrants dropping, I'm almost 100% certain it's due to some sort of overheat protection. I know on the Galaxy Nexus, Morfic has a toolkit for his Trinity kernel that allows disabling of the heat protection just so you're able to get a full Antutu (or quadrant) score without the heat sensor kicking in and throttling your phone.

fatboy547 said:
Just curious Roman and wh. Is faux gonna get the s3?
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
Hi Roman,
Thanks for putting this kernel together, appreciate it. Can i ask your SetCpu settings if you even use it?

glensta said:
Hi Roman,
Thanks for putting this kernel together, appreciate it. Can i ask your SetCpu settings if you even use it?
Click to expand...
Click to collapse
Use Nstools its a much better app.

The effort is appreciated can't wait till we get some unicorn power bro! Glad you got this phone.

Any chance of UV the lower frequencies to help save some battery while on standby?

Markdental said:
Any chance of UV the lower frequencies to help save some battery while on standby?
Click to expand...
Click to collapse
It's coming later too
Sent from my SGH-T999 using Tapatalk 2

Finally!!! Thanks!!!

uoY_redruM said:
Roman, you are AMAZING! I'm so happy to see the first custom kernel on the SGS3 (US)!!
As for quadrants dropping, I'm almost 100% certain it's due to some sort of overheat protection. I know on the Galaxy Nexus, Morfic has a toolkit for his Trinity kernel that allows disabling of the heat protection just so you're able to get a full Antutu (or quadrant) score without the heat sensor kicking in and throttling your phone.
Click to expand...
Click to collapse
I believe you can run "stop thermald" but I'm not positive.
Sent from my SGH-T999 using Tapatalk 2

to be honest. this thing already is PLEANTY fast. i dont see a need to over clock. if anything we should try for some undervolting and battery life saves. we all love high quadrant scores for bragging rights, but when it all comes down to it. we all just want a better preforming device. quadrant scores arnt everything.

flashin darkside kernel

i flashed the darkside rom v7 now my quiestion is can i flash the darkside kernel as well will it work together and what does that do im sorry im a noob i have no idea whats the point of a kernel

jsnoop said:
i flashed the darkside rom v7 now my quiestion is can i flash the darkside kernel as well will it work together and what does that do im sorry im a noob i have no idea whats the point of a kernel
Click to expand...
Click to collapse
The kernel is the foundation and most important part of any Rom ...to answer your question ...yes you can flash it
I like my Roms the way I like my women..... Clean and smooth

Yes you can...and honestly you should !!!! I got my s2 back in February and I took time to actually read up on my phone an one feature I liked in juggs 5.0 that I didn't really find in a lot of Ics roms is overclocking. Trust me flash the kernel.
Sent from my SGH-T989 using xda app-developers app

I agree as I just flash his new #5 kernel and have seen great improvements!:thumbup:
Sent from my SGH-T989 using Xparent ICS Tapatalk 2

KevRodriguez said:
I agree as I just flash his new #5 kernel and have seen great improvements!:thumbup:
Sent from my SGH-T989 using Xparent ICS Tapatalk 2
Click to expand...
Click to collapse
YMMV. On completely stock rooted i got 500 point higher bench on antutu with stock kernel vs darkside #5.
*shrug*
Sent from my SGH-T989 using xda app-developers app

blackangst said:
YMMV. On completely stock rooted i got 500 point higher bench on antutu with stock kernel vs darkside #5.
*shrug*
Sent from my SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
Interesting. What governor where you using when benchmarking Cause As I am sure you are aware his defaults to a battery saver option with BADASS.

KevRodriguez said:
Interesting. What governor where you using when benchmarking Cause As I am sure you are aware his defaults to a battery saver option with BADASS.
Click to expand...
Click to collapse
On #5 its not badass according to his post...its ondemand...
Available CPU Governors:
conservative, performance, interactive, ondemand, powersave, userspace, lagfree, badass

Kernel recommendations

Running vicious jb 4.1. Just wondering what kernels you all would recommend. The battery life is good but I'm liking to squeeze a little more out of it during the day. Any suggestions?
Sent from my Galaxy Nexus using xda app-developers app

Try franco.Kernel
http://forum.xda-developers.com/showthread.php?t=1367341

Thanks. You use it?
Sent from my Galaxy Nexus using xda app-developers app

Yes, i use it with aokp nightlies. It's fast and great battery life too.

I'm using Trinity and I'm very happy with it! Very smooth!

To be honest here, I tried so many different kernels and the battery life is about same. Really. Performance and color wise, it is different, but Franco, Trinity, Popcorn, Stock, and Faux has almost same battery life unless you actually do something to it. If you really want that little bit of battery though, Trinity squeezes about 10~30minutes more screen on time thanks to undervolting, but I use Franco, because I like the performance on this bad boy and I can also undervolt on this and get about same battery life as Trinity.
So you can literally use any custom kernel and expect same battery life with a little bit of customization and tweaks.

I've only unlocked and rooted for 2days, primarily to be on yakju and get timely updates.
So far i've tried trinity, fugu and franco's kernel...but my phone seems to be allergic to trinity and fugu, so im sticking with franco for now..next im gonna experiment on OC n UV...see how things go then.

+ another for franco. It does give my phone a bit more snap with about the same to a little better battery than stock. Games run noticeably smoother also*

Looks like franco takes the cake then. Thanks guys. I'll give it a spin. Seems like the superior choice since you can still undervolt through that.
Sent from my Galaxy Nexus using xda app-developers app

xdapadogx said:
Looks like franco takes the cake then. Thanks guys. I'll give it a spin. Seems like the superior choice since you can still undervolt through that.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Yes, but be careful when you're undervolting. Make sure that you uncheck "apply on boot" and use "Stability Test" app from Play Store to see if your currenty voltage is stable

franco is the premier master kernel developer imo

Running stab test now. Looks like a video game. What does it do exactly
Sent from my SCH-I500 using xda app-developers app

Franco...
Sent from my SGH-T999 using xda premium

trinity kernel. and if not, youre just denying yourself one of the finer kernels in all of android.

Haha OK guys I get it, Franco. Already flashed it. Must be a marvel in its own
Sent from my SCH-I500 using xda app-developers app

How do you like Trinity? Figure I get it just to have in case I want to compare
Sent from my SCH-I500 using xda app-developers app

wonderfully stable. can be the best on the battery if you need it to be, or the beast that it is in performance.
---------- Post added at 09:02 PM ---------- Previous post was at 08:58 PM ----------
you would need to reflash your rom with trinity the first time, since franco kernel uses it own ramdisk. you want trinity to grab the roms ramdisk, not francos.

simms22 said:
you would need to reflash your rom with trinity the first time, since franco kernel uses it own ramdisk. you want trinity to grab the roms ramdisk, not francos.
Click to expand...
Click to collapse
ha, guess that solves why my phone doesnt like trinity.guess im gonna try that next time

Used both Franco and Trinity. Franco has a bit more batt life, but Trinity has better default color values.
Franco has more frequencies, but Trinity has more governors and i/o schedulers
HTH
Sent from my Galaxy Nexus using xda app-developers app

If you want great colors and performance: trinity. If the colors dont mean a **** to you use franco
Sent from my Galaxy Nexus using Tapatalk 2

What ROM is outstanding with battery life?

I'm currently using cm10. Not really impressed with battery, but overall is decent. I'm looking for a ROM with pretty good battery life. Any suggestions?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

There is just way too many variables to answer that question. Just keep trying roms one after another. Also expect this thread to locked down soon!
Sent from my SGH-I747M using xda premium

Why would this be locked? He's asking for what ROM has good battery life, not which one is best or other flameworthy question.
Anyway, I think the Kernel has as much if not more importance with battery life. I use official AOKP JB Milestone (4.1, not 4.2) with LeanKernel and I get AMAZING battery life. I noticed that LeanKernel was the factor that did this for me, so you might want to give it a shot. I don't think LeanKernel works with 4.2 yet though.

The best way is to try them yourself. Everyone uses their device differently so performance and results vary across devices. Also ignore what the guy said, this was a good question.
Sent from my SGH-I747 using xda app-developers app

For me, best battery to date has been tasks aokp with ktoonsez kernel.
Their 4.2 rom is really nice but still in the early stages so I expect the battery life to get better but their 4.1 rom was outstanding with battery.
Sent from my T999 GS3 @ 2. 1GHZ

danielsaenz said:
Why would this be locked? He's asking for what ROM has good battery life, not which one is best or other flameworthy question.
Anyway, I think the Kernel has as much if not more importance with battery life. I use official AOKP JB Milestone (4.1, not 4.2) with LeanKernel and I get AMAZING battery life. I noticed that LeanKernel was the factor that did this for me, so you might want to give it a shot. I don't think LeanKernel works with 4.2 yet though.
Click to expand...
Click to collapse
Is LearnKernel compatible with Ktweaker and AOKP Rom?

Just installed leankernal. Let's see how battery life will go. Thanks guys.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Check out AoCP. I've gotten the best battery life out of that ROM. I think I used lean kernel with AoCP 4.4. The current version is now 4.6.
I also use juice defender and cpu sleeper to aid with general battery life.

Does anyone know how the leankernel compares with the ktoonsez kernel for battery life? I was getting great battery life with kt and cm10
Sent from my SGH-I747M using xda app-developers app

Ultimatum
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Liquid Smooth 4.1.2 JB RC9

bringing back this thread lol. im new here and postd in the wrong s3 forum. are there any updates since december on roms with good battery life?
---------- Post added at 11:16 AM ---------- Previous post was at 11:14 AM ----------
I'm basically looking for a rom that can last 8 hours screen time if that's even possible. Or close to that, data always on.

8 hours screen time with data always on? On stock battery? That's a tall order. Good luck with that.

Atrixn00b said:
bringing back this thread lol. im new here and postd in the wrong s3 forum. are there any updates since december on roms with good battery life?
---------- Post added at 11:16 AM ---------- Previous post was at 11:14 AM ----------
I'm basically looking for a rom that can last 8 hours screen time if that's even possible. Or close to that, data always on.
Click to expand...
Click to collapse
Get a http://www.amazon.com/Hyperion-Exte...=1360706114&sr=8-3&keywords=galaxy+s3+battery
battery life depends on too many things. my daily driver is awesome but if battery life was my main concern I'd never enjoy a ROM as much

8 hours screen time doesn't seem possible in my experience on stock battery. On Carbon ROM with LeanKernel I get a good 3-4 hours screen time when I'm gone for 14-16 hours from a charger.
Sent from my SGH-I747 using xda app-developers app

haha just my way of asking If 8 hours would be possible. I think the most I got to was 4 and a half. was reading reviews before I got the phone and it said that it has 7 hour screen time. Have you tried that extended battery? I was looking at some and was gonna buy one but afraid of buying a faulty one lol.