Develop Bugs

Lean kernel vs Franco kernel

Which one do u perfer guys ? Both are awesone and cant make a decision Battery life ? Hotplug efficiency? Performance ?
Sent from my Galaxy Nexus using XDA App

I'm getting crazy good battery life and performance on lean kernel and AOKP. Franco is good too, but I think I'm getting much better battery life on lean.

Each phone is different find out your preference on your own
Sent from my Galaxy Nexus

James Bond kernel.

I've seen what franco has done with the nexus s kernel, realiable, smooth, and constant updates, it was always my choice. So as soon as i get my GN its the first kernel i'm going to flash and hopefully it won't ever disappoint

same for me. I have a freaking good battery life on lean but better performance with Franco
cvbcbcmv said:
I've tried both for a great while. Battery life with interactivex on lean and hotplug on franco lean is definitely better, on my phone Lean runs a little bit better. on my phone.
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I found a few kernels in the dev section but couldnt find the lean one. Can you guys posts the link or more info on it. Nothing i found says lean on it. Please and thank you

GeLopez said:
I found a few kernels in the dev section but couldnt find the lean one. Can you guys posts the link or more info on it. Nothing i found says lean on it. Please and thank you
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its Imoseyon kernel on Rootzwiki. btw, Ive tried both Lean and Franco kernel, I still prefer Ezekeel Glados kernel though. amazing smooth and friendly battery life.

I was using franco's kernel, but with all the hourly updates lately, it spooked me a little, so now Im on trinity inferno512 kernel, and wow games run fluid with the GPU at 512mhz.

im still debating... im jumping back and forth but i need to stick to one for a week and try it out!
leankernel has updates just as much as franco... i say thats a good thing
i say take a week long test and run some benchmarks with each of those kernels, take a screenshot, and come back with what you like.
Im working on that now.

GLaDOS is by far the best kernel for my phone. No lags whatsoever and four hours of screen on time with the stock battery

I'm starting to lean toward glados myself. I've had a lot of issues with Franco's 14.x kernels.
I've also found lean kernel to be a bit choppy. Shadow gun runs really choppy w lean kernel, but ultra smooth w either Franco and glados. It could be that I'm not using the correct governor though.

I have tried both back and forth. AS of last update I've tried franco 14.4 (deep sleep ~50%) which is good but has a much better battery life (deep sleep at 91%) on hotplug of lean 1.8.0.
+1 for lean

I have used lean kernel for a while now. I used to get lots of lock screen lag with Franco. Which I don't with lean.
Sent from my Galaxy Nexus using xda premium

Im on Leankernel 1.7.3 right now. Used Francos way before, but after Version 13.1 i started to get battery drain issues. So i switched over to Glados which seemed to have a good battery life to me, but was very choppy overall on Wheatley Gov'.
Lean is the best for me at the moment, almost 4 Hours Screen on time isnt a problem for me, i use the build in InteractiveX Governour, with some heavy undervolting. Data, Sync, Wifi , ... everything enabled. Screen Brightness ~ 35%
I gonna try Lean 1.8.0 Later that day. But i have to admit that Franco's next upcoming with Turtle Governor might be an interessting choice either.
For me, both devs are doing a really great job, both Kernels are good.

I've used three different Franco kernels and had freezing and reboot issues with all three of them. Never had an issue with Lean Kernel.

I don't care what kernel I have. If:
1.At the end of the day on my normal usage phone has less than 60% of battery left it means that the next day I won't manage
2. I have less than 60% I have to recharge overnight
3. Phone can get me throughout the day on heavy usage ...
Don't need any fancy kernels if they don't tick the first box
Edit:
Just tried lean kernel and its way to slow. Scrolling in text app or anywhere really isn't even half as smooth as Franco ....
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After trying many kernels... I always come back to Faux123's kernel (Currently 011b10u). It's just such great battery life... idle battery drain is just a horizontal line on the battery graph for hours. LOVE IT. (P.S. Ultra-liquid-smoothness too). http://rootzwiki.com/topic/12512-kernelgn-lte3017ics4023uvgpucpu-occifsslqbotgfiopsv010jan-17/page__st__930

MattSkeet said:
Just tried lean kernel and its way to slow. Scrolling in text app or anywhere really isn't even half as smooth as Franco ....
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Which text app are you referring to that us siow? I'm using the LeanKernel and not really noticed anything.

jhericurls said:
Which text app are you referring to that us siow? I'm using the LeanKernel and not really noticed anything.
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Stock.... smooth as butter on Franco's. Lean even on home screen wash stuttering ...
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Battery life based on kernels and ROM combinations

Been playing with many combinations of ROM and kernel yet seems no matter what I try battery life is poor. Right now running coreDroid 1.3.3 with latest Franco kernel seems so so with slight under voltage settings within setcpu. So what is everyone else opinions? Thanks for feedback!
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My best combination has come from AOKP Milestone 3 and Faux's 12u kernel. Usually get 16-20 hours with light/mod usage during the day and heavy usage in the evenings.

theherodrownd said:
My best combination has come from AOKP Milestone 3 and Faux's 12u kernel. Usually get 16-20 hours with light/mod usage during the day and heavy usage in the evenings.
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Best battery life I've seen yet is the stock 4.0.4 release w/ the kernel that comes with it. I get 4-7 hours with mod-heavy usage and 14-16 hours of light-mod usage.

I get 2-3 hours using Franco's kernel. Really not great. I should look around for a better kernel to suit my usage.

Kalavere said:
I get 2-3 hours using Franco's kernel. Really not great. I should look around for a better kernel to suit my usage.
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Jeez you use your phone a lot. I'm on kang 1/31 with faux's kernel. I use my phone for the commute to work and turn off lte when I get there. Mostly music and reading. I have it underclocked at 1060mhz and running under performance governor, it helps me check my phone and send out texts at work faster. Then at night I flip on lte again and a lot of the times go out. I don't think 15 hrs is too bad.
Sent from my Galaxy Nexus using xda premium

best battery life i had was 36 hours with moderate usage. no lie.
aokp b17 + francos 13.1, smooth and amaziiiiiing battery life. if i wasn't a flash junkie, i would be sitting on that right now.

I'm a little confused by your post. Are you developing a kernel or a rom? Either way looking forward to the release.
Sent from my Galaxy Nexus

Gerson2407 said:
Jeez you use your phone a lot
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I mean screen on time!
I got 42 hours without charging the phone yesterday, with 2 hours 40 minutes screen on time. I was using it very sparingly over the period though.

If we you want this thread to be useful we need to make sure all posts at least state screen ON time. Even then there are so many other factors:
Screen On Time
Total Up Time
GSM/LTE
ROM
Kernel
Kernel Freq
Kernel Governor
Screen Brightness (Avg)
WIFI state
BT State
etc
Okay so I'll start...
Screen On Time - 3-4hrs
Total Up Time - 14 to 25hrs
GSM/LTE - GSM
ROM - AOKP 22
Kernel - Franco 16.2
Kernel Freq - 700/1000
Kernel Governor - Turtle
Screen Brightness (Avg) - <40%
WIFI state - On
BT State - Off

Clarify Battery Life Info
I am not developing anything. I am just wondering what people that flash different kernels and roms have experienced and settled on as far as best battery life. In my sig there is the one I currently use. I actually have been trying franco kernel lately and that seems to be slightly better. Its tough to tell since I try to plug in the phone as often as possible either to outlet or my laptop. Does that help clarify what I am curious about??

Favorite kernel? Leankernel vs. franco.kernel vs. ?

What's your favorite kernel, considering battery life, speed, OC/UV options, and stability? I've been alternating between leankernel and franco.kernel and can't decide which I prefer. If you choose other, specify what your favorite is!

Trinity and lean are my favourites

Trinity... lean was also good for me...
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franco kernel

from battery saver to performance
-james bond
-lean
-franco
-trinity

mrdziuban said:
What's your favorite kernel, considering battery life, speed, OC/UV options, and stability? I've been alternating between leankernel and franco.kernel and can't decide which I prefer. If you choose other, specify what your favorite is!
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I am using the kernel that come with CM9 beard off of Linux and I love it, I am getting better battery life using this than Franco's, but I'm not sure if you can just the kernel, I think you need to be on the ROM as well...
Sent from my Galaxy Nexus using XDA

i've tried lean,franco,glados and trinity..
both lean and trinity are my favorite, but for now i think i'll stick with lean

trinity for smoothness and super fast kernel
lean is for fast kernel + good batt

the latest trinity kernels...ofv and flatline are equal and in some cases better batt life then lean...without sacrificing performance...

I just recently purchased a Galaxy Nexus and have only tried out Franco Kernel. I get an average of 3.5 hours screen time while underclocked. After I record some accurate results, I think I'll switch to Lean Kernel in order to see which Kernel gives me the best battery life.

OrangeFever said:
I just recently purchased a Galaxy Nexus and have only tried out Franco Kernel. I get an average of 3.5 hours screen time while underclocked. After I record some accurate results, I think I'll switch to Lean Kernel in order to see which Kernel gives me the best battery life.
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My thoughts exactly, although I've had my GNex for over 2 months.

Why not try both yourself for a while? Just flash them and see what suits you best... For me I started with Franco and just sticked to it as it works perfectly for my needs but I can't compare the both.

Tried Franco kernel, 17.2 give me the best battery life with slightly more than 3.5 hrs on screen time, for M1 and M2, can only last slightly less than 3 hrs on screen. Anyone also experience this?
Anyone here tried GlaDos kernel and have any reviews?

GLaDOS review
GLaDOS has both speed and good battery life. It's more or less based off the theory that processing stuff at higher speed will allow your phone to get more quickly back to sleep (not the same as "Deep Sleep"; the C4 rest state happens concurrently, even when you're on 1200 mhz).
But the only way to see if this pans out is to use it. You should try it with your daily usage and see if it works for you.*
For example, I find it has the best battery life for playing music with screen off (3% per hour speakerphone, 5-6% on bluetooth) and matches [or beats] the others for stress-usage (screen on, 8-10 apps in background gets around 20%). I haven't tried intermediate usage, because frankly, I don't use only a few apps when I'm using, so that's a gap to fill I guess. Note: streaming music is apparently a problem, judging from recent reports.
*Use BetterBatteryStats or an app with series history; the graph should become linear partway and that's when you know to take numbers.

Yeah but how do you backup your default kernel?

I just installed Franco kernel, why would one install lean kernel? what's the difference between two anyway?

I think the answer to this question is, 'it depends'.
I think the ROM/Kernel combination has an impact on performance and battery life.
For example: previously while running bixie's stock and AndroidME, I had great performance with Trinity. However, on AOKP, trinity delivered poor battery life. With AOKP, I found Franco to be a better match.

gbarayah said:
I think the answer to this question is, 'it depends'.
I think the ROM/Kernel combination has an impact on performance and battery life.
For example: previously while running bixie's stock and AndroidME, I had great performance with Trinity. However, on AOKP, trinity delivered poor battery life. With AOKP, I found Franco to be a better match.
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OK, you're right I didn't really gave you enough information on my end)
I'm using stock Jelly Bean 4.1.1 OTA, I did rooted my phone so that I can install different kernel
I'm using few social (facebook,google+,foursquare,etc) apps, some messengers (what'sup,kik,google voice)
as far as data goes I'm using Juice Defender and that helps me a bit with my data on/off
but what _REALLY_ kills my battery is screen, in the best case scenario I was able to archive a little over 2h of screen time and in most cases it's ~1:30h
i'm using standard battery in my phone.
my goal is _SOMEHOW_ increase screen time
that's why I'm trying out franco kernel)

Stock.
Sent from my AOSP Android 4.1.1 Galaxy Nexus.

Tried trinity and faux and Franco with AOKP and I find Franco to be best with AOKP. I have it overclocked to 1.3GHz and no undervolt, since I have smart reflex on
Swyped on my Galaxy Nexus running AOKP with Franco Kernel

[Q] Is battery life bad on AOKP B32? Or just me?

So I am running AOKP B32 with Franco.kernel nightly 139. I have the kernel set to min 384 MHz and Max at 1344 MHz. Not sure if that means anything. But I'm curious if anyone has any tips to try and get the battery life to run better? I got 7 hours of medium usage. If anyone has any tips. That would be great!
Sent from my Galaxy Nexus using XDA

Battery life definately went way down in AOKP B32.
I want to say it had something to do with the new Kernel.
I reflashed franco Milestone 2 and am getting really nice battery life. Up to 3 hours of screen time and around 13 hours standby during the day.

Might be in the minority here, but I haven't noticed any problems.

Why do I get horrible battery life with ROMS and Kernels?

I've used cm9 and aokp the past month and tried the stock Kernels that come with it and Franco's. One thing is for certain. No matter combination I get horrible battery life. If I run stock android with my extended battery including various Widgets I get 24 hours battery life pretty easily. Moderate usage and some heavy usage. With cm9 I'm getting maybe 15-16 hrs with aokp maybe 8-9 hers and I'm using Franco's kernel right now. I don't understand this. People talk about how much better the battery life is with various ROMS than stock but I'm not getting it. I'm getting like half the battery life I was before. Any ideas?
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I can relate to you. Was in CM9 and Franko's kernel and as you said, horrible battery life. I went back to stock but this time I did not install apps thar would require services running (well I have to run WhatsApp so that's the only one running besides default abdroid services).
I am seeing better battery life this way.
The next step would be to install CM9 and restore all my apps to see if I can replicate the same battery life.
Sent from my Galaxy Nexus using Tapatalk 2

you need to find out what apps are keeping your phone from sleeping dude its not the ROM or Kernel if you want to find out you can use better battery stats or just read the permissions on your apps otherwise its probably cause your on your phone too much with the screen on first show use a usage screen shot then how many apps you have we can narrow it down

dislplin01 said:
you need to find out what apps are keeping your phone from sleeping dude its not the ROM or Kernel if you want to find out you can use better battery stats or just read the permissions on your apps otherwise its probably cause your on your phone too much with the screen on first show use a usage screen shot then how many apps you have we can narrow it down
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^This, and how much on screen time are you getting?

Ngo93 said:
^This, and how much on screen time are you getting?
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I'm getting about 1.5 hrs screen time. With stock in was getting 2-3hrs. As far as apps keeping my phone from sleeping. I'm running the same apps I run on stock android when I was getting a full day on average so not sure how they would run different because I'm on a ROM.
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get better Battery stats app... And check for partial wakelocks...
I had exactly same problem... And on stock no problems
But now... Franco m4 + aokp b37
And 3 to 3.5 hours screen
Sent from my Galaxy Nexus using XDA

I used that better battery stats app and apparently there was audio something (sorry can't remember the exact words) causing partial wakelocks, read some google search results and disabled the lock screen sound in aokp and it went away, go figure?
I swear my battery life is better with the kernel that comes with AOKP rather than franco, which was a bummer since I'd just bought the franco updater app, perhaps just my imagination or maybe something just needs to be tweaked

Well, this has pretty much nothing to do with the ROMs/kernels, you flash to the device. If you use the device for heavy gaming, you use loads of apps etc. the battery life will obviously be bad, because the CPU needs the according CPU clock speed...
Underclock the CPU, or better: Get AnTuTu CPU Master pro, and set the profiles, underclock screen off, to 700 MHz, and every other proile, where you do not neccessarily need the device to that speed, not below, otherwise it will just crash... That way you have the best battery life, for your usage, so basically, every time you switch the device's screen off, it will save a hell of a load of battery

Under clocking doesn't do much for battery life contrary to popular belief. It just increases the time it takes to process a task. It might take 1s at 1.2ghz vs 1.8s at 800ghz to complete a given task for example. So yes the cpu will run at lower speed and voltage but it still also take longer to return to idle.
Sent from my GNex

dr.m0x said:
Under clocking doesn't do much for battery life contrary to popular belief. It just increases the time it takes to process a task. It might take 1s at 1.2ghz vs 1.8s at 800ghz to complete a given task for example. So yes the cpu will run at lower speed and voltage but it still also take longer to return to idle.
Sent from my GNex
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Well, I don't really mean to break this, because it is right, but not completely...
Underclocking & undervolting, when the device is not in use (Screen off) saves loads of battery...
And because it's a dual-core, it takes mostly just as long to open an app at 700 MHz, as when you're doing it at stock clock speed, or voltage or higher.. So, in that case...

familyguy59 said:
Well, this has pretty much nothing to do with the ROMs/kernels, you flash to the device. If you use the device for heavy gaming, you use loads of apps etc. the battery life will obviously be bad, because the CPU needs the according CPU clock speed...
Underclock the CPU, or better: Get AnTuTu CPU Master pro, and set the profiles, underclock screen off, to 700 MHz, and every other proile, where you do not neccessarily need the device to that speed, not below, otherwise it will just crash... That way you have the best battery life, for your usage, so basically, every time you switch the device's screen off, it will save a hell of a load of battery
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Not sure how this wouldn't have to do with the different ROMS and kernels since I stated what battery life I was getting with stock vs using a custom kernel and ROMS. I'm giving a comparison of my battery on each with the same usasge and they are different.
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0kk0 said:
get better Battery stats app... And check for partial wakelocks...
I had exactly same problem... And on stock no problems
But now... Franco m4 + aokp b37
And 3 to 3.5 hours screen
Sent from my Galaxy Nexus using XDA
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Thank you! I will look into this!
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azlemad said:
I used that better battery stats app and apparently there was audio something (sorry can't remember the exact words) causing partial wakelocks, read some google search results and disabled the lock screen sound in aokp and it went away, go figure?
I swear my battery life is better with the kernel that comes with AOKP rather than franco, which was a bummer since I'd just bought the franco updater app, perhaps just my imagination or maybe something just needs to be tweaked
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I will look into this as well! Thanks!
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Okay so today I tried MIUI. The battery life blows stock android, aokp and cm9 away. I had over 3hrs of screen time today. Night and day compared to cm9 and aokp. I really don't get this.
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