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[KERNEL][v500][4.4.2] AIC Kernel [MAY-4-2014]

OP aicjofs

5th May 2014, 01:43 AM   |  #1  
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AIC Kernel

for LG G Pad 8.3 V500

Compatible with v500 STOCK BASED LG 4.4.2 roms ONLY! The "gamma improvement only" is available for other ROM's in the installer

This was just a private build that seems to have gained some demand to help with the v500 gamma issue. I have been running it the past week and it seems stable enough to share to other v500 users. I'm not a developer, I build and update TWRP for the Nabi tablets, have shared a few windows bat files, have a VB.net app to automate various mods to the Nabi's, and a lot of research of nvflash/APX nand formatting for the Nabi's. My only previous kernel builds were for the HP Touchpad for private use, and my Ubuntu computer. Basically taking what real developers have done and trying to make it work for my own use.

EDIT 5/11/14: I put the gamma improvement fix in just a stock kernel with no other changes, and the changes to CM11 kernel. There are 2 CM kernel version depending on which LG ROM you installed CM over to deal with the dimming issue at boot. Those are available in the new all in one installer.

Disclaimer:
Experimental. Use this at your own risk.
Please Please Please make a full backup of your tablet.

Base:

The starting source is V50020B from LG
Compiled with arm-eabi-4.7

Added features:

Initial
  • Improved gamma. Using default linear LUT (from 1.8-2.0 to 2.2-2.3 on my screen)
  • Default overclock from 1.72 to 1.78Ghz (no voltage increase)
  • Default underclock to 162 Mhz
  • Sysfs Voltage Table added for undervolting
  • Allow GPU to manually increase freq from 400Mhz to 487Mhz
  • Add GPU boost to GPU on demand governor
  • Add Faux Display interface (gamma control seems broken)
  • Add NTFS support(untested)
  • Add SIO Scheduler
  • Add FIOPS Scheduler
  • Optimize memcopy, string and square root functions
  • Add Intelliactive Governor

Download:

BETA: http://nabtabhacks.com/downloads/AICbeta2.zip Very stable but haven't got enough feedback to make it official. See changes here http://forum.xda-developers.com/show...&postcount=229

Installer for all gamma improvement kernels, tested by numerous members(AIC, stock, and CM) http://nabtabhacks.com/downloads.htm

Installer AIC Kernel: http://nabtabhacks.com/downloads.htm

Uninstaller, returns to stock 20B: http://nabtabhacks.com/downloads.htm

Install:
  1. Reboot to recovery(TWRP)
  2. Make a backup, just do it
  3. Install AIC_kernel_flashable.zip
  4. Wipe caches/dalvik if you see fit
  5. Reboot

Source:

AIC: https://github.com/aicjofs/android_kernel_lge_v500
Stock with gamma only: https://github.com/aicjofs/android_k...lge_v500_stock
CM: https://github.com/aicjofs/android_kernel_lge_v500_cm

Credits

I need to give some specific acknowledgement to "oubeichen" for sharing his kernel tree, and sharing of information. Also to id10terror's install script was the easiest to use as a template.
Last edited by aicjofs; 21st August 2014 at 11:56 PM.
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5th May 2014, 02:41 AM   |  #2  
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Woohoooo, Finally some gamma correction love. Flashing now
5th May 2014, 08:36 AM   |  #3  
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ROM: LG-V500_KOT49I.V50020B_US_Stock-BB-Rooted

Working much smoother with your kernel, thank you for sharing!
5th May 2014, 08:46 AM   |  #4  
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Tested it yesterday and it made a subtle but noticeable difference to whiteness and brightness. Thanks again

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5th May 2014, 10:15 AM   |  #5  
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Am really eager to try! Thx a million times @op!
5th May 2014, 03:48 PM   |  #6  
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So only run this if you're on a stock ROM not cm?

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5th May 2014, 05:10 PM   |  #7  
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Quote:
Originally Posted by xyojimbox

So only run this if you're on a stock ROM not cm?

Sent from my LG-V500 using XDA Premium 4 mobile app

Correct

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5th May 2014, 06:38 PM   |  #8  
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tested with LRS ROM (stock based ) , working perfectly!

many thanks!
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6th May 2014, 02:41 AM   |  #9  
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Gamma has been corrected perfectly. Antutu benchmark increases from 24,631 to 25,669. Two minor issues: 1) a secure boot error message is displayed during every boot though the boot process is fine (signature issue?); the display is dimmer (about 20%) after sleep as compared to that immediately after boot (any workaround?)

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6th May 2014, 03:37 AM   |  #10  
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Quote:
Originally Posted by bloommax

Gamma has been corrected perfectly. Antutu benchmark increases from 24,631 to 25,669. Two minor issues: 1) a secure boot error message is displayed during every boot though the boot process is fine (signature issue?); the display is dimmer (about 20%) after sleep as compared to that immediately after boot (any workaround?)

Sent from my LG-V500 using Tapatalk

Nice increase on Antutu.

Secure boot error is normal with any custom boot image. Are you saying it stays on the screen once the LG logo starts "shimmering"?

Do you have auto brightness or manual brightness?

I have seen a couple of patches that might address that. I will give them a look next time I build. I want to turn off a debug config that makes the modules larger, intelliactive governor tops out at 1.72 instead of 1.78 by default, add exfat, and look in to replacing mpdecsion, maybe row scheduler. When I do that I will look at the dimming.

Before I do the above I was looking at anykernel script as some people have asked if I could make this work for other ROM's other then stock ROM's.

So anyone else notice anything thats an issue? Gamma decent? Stable? Probably only 3 of you, haha but I still am curious.
Last edited by aicjofs; 6th May 2014 at 03:41 AM.

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