[Kernel][AOSP] BasicKernel 02/06

kejar31 · Jan 31, 2013

Okay.. Most of you people know who I am.. and if you know me you know I am not much of a kernel dev

... Regardless, I love AOSP but while running CM10.1, I felt I was missing some things that were more readily available for a Stock ROM.. Things such as (unofficial)Voodoo sound, Overclocking and Undervolting.. So I went ahead and forked CM's kernel and added a few needed things.

Notes:

Thie kernel is for AOSP only!

This kernel include's codeworkx's downgrade to mali r2p4 commit from CM's gerrit.. In this commit codeworkx specifically states that there is a memory leak. Now I will also say this.. This downgrade greatly improves the graphical glitches found in the android 4.2 ROMS, IE no more keyboard funkyness etc... I have yet to see this leak myself and think the trade-off is worth it. If this causes serious issues for people let me know.

Features:

Compiled with the Linaro GCC 4.7.3 toolchain
Updated wifi driver
Unofficial Voodoo sound driver (otherwise this has not been reviewed and approved by Supercurio)
OverClock up to 1.8 Ghz
CPU Undervolting
Downgrade to mali r2p4 which fixed graphic glitches

ChangeLog:

A4 - initial release

A5
Compiled with the Linaro GCC 4.7.3 toolchain
Updated wifi driver

Downloads:

Kernel source - https://github.com/kejar31/android_kernel_samsung_smdk4412

i605 (VZW) - http://androidhosting.org/Devs/kejar31/BasicKernel-i605-A5.zip

Credit:

gokhanmoral
codeworkx
sbrissen
CyanogenMod
supercurio
Tk-Glitch

v36sedan · Jan 31, 2013

Re: [T0ltecdma][Kernel - AOSP] BasicKernel 01/31

Can this be flashed using liquid 3.2.1?

Sent from my SCH-I605 using xda app-developers app

kejar31 · Jan 31, 2013

v36sedan said:
Can this be flashed using liquid 3.2.1?

Sent from my SCH-I605 using xda app-developers app

yes it can

v36sedan · Jan 31, 2013

Re: [T0ltecdma][Kernel - AOSP] BasicKernel 01/31

Any cache wipe needed?

Sent from my SCH-I605 using xda app-developers app

kejar31 · Jan 31, 2013

v36sedan said:
Any cache wipe needed?

Sent from my SCH-I605 using xda app-developers app

never a bad idea.. but you shouldn't have to

ahjee · Jan 31, 2013

Re: [Kernel - AOSP] BasicKernel 01/31

Thanks Kejar! Appreciate this brotha

Sent from my SCH-I605 using Tapatalk 2

kejar31 · Jan 31, 2013

let me know how it is working for you guys!

v36sedan · Jan 31, 2013

Re: [Kernel][AOSP] BasicKernel 01/31

Seems to be working well

Sent from my SCH-I605 using xda app-developers app

tgyberg · Jan 31, 2013

Thanks for the work! And for a blast from the past:

Long live

!!

dmbfan13 · Jan 31, 2013

You say there is a memory leak with the downgrade, I assume this will affect performance? Do you know where the CM kernel is located, in case we want to go back?

Thanks for the development! Maybe we'll see a comeback of Gummy....or Liberty....

jdenman03 · Jan 31, 2013

Its not bad. Not getting near the benchmarks i was getting with jelly beans and perseus kernal.

Ps: battery seems to be better on this now though(liquid 3.2.1)

DroidOnRoids · Jan 31, 2013

Re: [Kernel][AOSP] BasicKernel 01/31

jdenman03 said:
Its not bad. Not getting near the benchmarks i was getting with jelly beans and perseus kernal.

Ps: battery seems to be better on this now though(liquid 3.2.1)

Benchmarks don't matter. Don't waste your time.

Sent From My Galaxy Note 2

kejar31 · Jan 31, 2013

dmbfan13 said:
You say there is a memory leak with the downgrade, I assume this will affect performance? Do you know where the CM kernel is located, in case we want to go back?

Thanks for the development! Maybe we'll see a comeback of Gummy....or Liberty....

you can always just reinstall CM right over the top to get the CM kernel back.. and I personally have not seen a performance hit on the GPU..The opposite really

BennyJr · Jan 31, 2013

Can any one try and see if skypes' mic works? I know it doesn't on the stock cm kernel.

kejar31 · Jan 31, 2013

DroidOnRoids said:
Benchmarks don't matter. Don't waste your time.

Sent From My Galaxy Note 2

not exactly true, although most of the time it is. Benchmarks matter when you compare apples to apples but not so when you compare apples to oranges.

So lets say you have CM installed on a phone.. you then run some benchmark. take note of the score. then you turn around and install a new kernel then rerun the benchmark.. I believe that is a fairly accurate way to show improvement. This benchmark will only show you a very small window of what has been improved and may not show other signs of what has been negatively effected. So as a way to test further you could run multiple benchmarks to help alleviate that issue.

Now if you use benchmarks to compare different phones, SOC or completely different OS's versions, that's when benchmarks really stop telling the truth.

gammaxgoblin · Jan 31, 2013

Re: [Kernel][AOSP] BasicKernel 01/31

Awesome !!!!

Sent from my SCH-I605 using Tapatalk 2

broprah · Jan 31, 2013

Fantastic! I've been running this all day, I'll offer some thoughts and bugs if I run into anything. Great work

WishRyder · Feb 1, 2013

I think I love you. For the first time in AOSP, my COMPASS IS WORKING! This also fixed my rendering issues with some apps on 4.2. :highfive:

I'm getting closer and closer to Paranoid Android being my daily driver. If only GPS and 4.2 camera weren't so flaky...

secularist · Feb 1, 2013

Re: [Kernel][AOSP] BasicKernel 01/31

Thanks for this option.

FWIW I'm getting pretty similar AnTuTu scores as with Beans/Perseus...

Sent from my CM 10.1-pimped Note 2

17akota · Feb 1, 2013

So since you're back in the game then, will we see Liberty on the Note.

Been running this kernel since this morning and everything is awesome. I've noticed better battery life and all I did was overclock to 1.8. I haven't played around with undervolting yet.

Thank you!!

[Kernel][AOSP] BasicKernel 02/06

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