[KERNEL][CM7/MIUI/CM9/AOKP] ArindamKernel [with Backlight Fix + Power Efficiency]

arindammanidas

arindammanidas

Senior Member
Apr 22, 2011
375
246
0
Singapore
www.arindam.in
Apr 21, 2012 at 11:19 PM
Hi folks,

I present to you ArindamKernel-CM9.:D:D:D

* Lots of CPU Governors + IO Schedulers (Default: Conservative + SIO)

* CPU Frequency: 120 Mhz - 1.2 Ghz (Default: 300 Mhz - 1 Ghz)

* Enabled OMAP Power Management features (sleep_while_idle, off_mode, voltage_off_while_idle etc.)

* Backlight Fix

* Sync Bug Fix by XDA_BAM

This Kernel is for all i9003s on CM9/MIUI v4/AOKP regardless of the backlight issue and will give you better battery savings than stock CM9 kernel.

Flash using recovery. Kernel version in "About Phone" should read #6. Test and provide feedback :):D

FOR CM7/MIUI: ArindamKernel_CM7_v7 (DO NOT USE! BUGGY! NEW VERSION COMING!)

FOR CM9/MIUI v4/AOKP: ArindamKernel-CM9-v6

NOTES:
* Flash it using CWM Recovery (Turn off Signature verification).
* Flash over a clean CM7/MIUI/CM9/AOKP.
* Please remove any backlight killer apps you might have installed.
* Please do not mirror the files. ;)

THANKS:
* Vurrut & Dhiru for their Kernel sources. :)
* The i9003 devs/ex-devs and the community. :)
 
Last edited:
  • Like
Reactions: Fady Refaat, walauu, txitxo0 and 44 others
arindammanidas

arindammanidas

Senior Member
Apr 22, 2011
375
246
0
Singapore
www.arindam.in
Apr 21, 2012 at 11:41 PM
Fix Source

Hi folks,

After a lot of work (and some sleepless nights :p), I'm happy to announce that the infamous backlight issue has finally been nailed.:D

It seems that the backlight issue was being caused due to a small issue in the ramdisk.

In the stock samsung kernels, the debugfs is also mounted on /debug in addition to /d and /sys/kernel/debug.
Adding a few lines to the init.latona.rc solves the backlight issue. Something must have been pointing to /debug to turn off the backlight, but didn't find it.

@All AOSP kernel devs, please add the following to your init.latona.rc in the respective stages:

Code: 
[I][B]on early-init[/B][/I]
mkdir /debug
mount debugfs /sys/kernel/debug /sys/kernel/debug

[I][B]on fs[/B][/I]
mount debugfs debugfs /debug
--------------------------------------------------------------------------------------------------

Check a stock GB ramdisk for reference.

Also mounting debugfs on /debug has another advantage. If you look at the init.latona.rc you'll find :

Code: 
    # Enabling sleep in idle path
    write /debug/pm_debug/sleep_while_idle 1

    # Enabling Voltage OFF in idle path
    write /debug/pm_debug/voltage_off_while_idle 1

    # Enabling OFF mode
    write /debug/pm_debug/enable_off_mode 1

    # Enabling Smartreflex
    write /debug/pm_debug/smartreflex/sr_mpu/autocomp 1 
    write /debug/pm_debug/smartreflex/sr_core/autocomp 1
The values were not being set earlier. Now there should be better battery life.:D

Long Live the i9003!!!:D:D:D
 
Last edited:
  • Like
Reactions: mdaamir1989, kiddo94, toiyeumetre and 11 others
tariq_devil

tariq_devil

Senior Member
Nov 2, 2011
266
15
0
Apr 22, 2012 at 4:41 AM
bscraze said:
Select toggle signature verification.

Cheers:)

Sent from my GT-i9003 powered by Stable and Smooth CleanKpu rom
Click to expand...
thanks. sorry if orgot to check in CWM options!! lol.. :D

---------- Post added at 09:11 AM ---------- Previous post was at 08:55 AM ----------

bro u rocked my phone, it worked! no f**king black light now! yeay! thanks a ton bro... :p
 
  • Like
Reactions: arindammanidas
arindammanidas

arindammanidas

Senior Member
Apr 22, 2011
375
246
0
Singapore
www.arindam.in
Apr 22, 2012 at 8:26 AM
tariq_devil said:
thanks. sorry if orgot to check in CWM options!! lol.. :D

---------- Post added at 09:11 AM ---------- Previous post was at 08:55 AM ----------

bro u rocked my phone, it worked! no f**king black light now! yeay! thanks a ton bro... :p
Click to expand...

That's great news :D Please mention on which ROM it worked CM7 or MIUI.




bscraze said:
Hmm can you share how you solved the problem? Just curious

Cheers:)

Sent from my GT-i9003 powered by Stable and Smooth CleanKpu rom
Click to expand...
Yes I'll definitely share with everyone how to solve this problem :) but first I want to make sure this works ...

Sent from my GT-I9003 using XDA
 
  • Like
Reactions: bscraze
tariq_devil

tariq_devil

Senior Member
Nov 2, 2011
266
15
0
Apr 22, 2012 at 9:07 AM
arindammanidas said:
That's great news :D Please mention on which ROM it worked CM7 or MIUI.






Yes I'll definitely share with everyone how to solve this problem :) but first I want to make sure this works ...

Sent from my GT-I9003 using XDA
Click to expand...
i always wished to use the MIUI but due blacklight i never stayed on it. now it works flawlessly thanks to u.. :)
 
arindammanidas

arindammanidas

Senior Member
Apr 22, 2011
375
246
0
Singapore
www.arindam.in
Apr 22, 2012 at 12:21 PM
loukalok said:
Can add some tweak into it?

Sent from my GT-I9003 using xda premium
Click to expand...
It has the same tweaks as vurrut kernel v4 for CM/MIUI...





crk1995 said:
Hey man... Can u pls fix the issue on cm9 also....
Click to expand...

Well Dhiru and other devs will include it in their kernels...




loukalok said:
I test it on cm9 soon
And report if it work on cm9

Sent from my GT-I9003 using xda premium

---------- Post added at 05:53 PM ---------- Previous post was at 05:30 PM ----------



@crk
i test it in cm9 alpha 2
it work:D
Click to expand...

Please do not use this on CM9...




crk1995 said:
Why is that necessary..
I done it without toggling anything in cwm...
Click to expand...
Maybe signature verification is off by default in your CWM. :)

Sent from my GT-I9003 using XDA
 
  • Like
Reactions: saraomani and crk1995
You must log in or register to reply here.

New posts

Our Apps
Get our official app!
The best way to access XDA on your phone
Nav Gestures
Add swipe gestures to any Android
One Handed Mode
Eases uses one hand with your phone