[KERNEL][v50030a][v50030b][5.0.2]Fishears Custom 1.2.3 & StockPlus 1.0.8 - G Pad 8.3 Android Development

FISHEARS KERNELS FOR STOCK KOREAN V50030A AND HONG KONG V50030B ROMS **ONLY**
DO NOT FLASH WITH ANY OTHER ROM​
This project consists of two kernels:
Fishears StockPlus Kernel:
Based on the Stock LG kernel from the Korean v50030a, Android 5.0.2 ROM. It will always stay as close as possible to the original kernel whilst being kept up to date with the Linux Stable 3.4.y branch and including other patches that can be considered as bug-fixes to the original LG source code. This is best for people who want an up to date Stock kernel experience.
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Fishears Custom Kernel:
Also based on the Stock LG kernel from the Korean v50030a, Android 5.0.2 ROM. It will be kept up to date with the Linux Stable 3.4.y branch and will also include various enhancements and performance improvements for people who like to tweak their kernel setup.
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An Important Note About MLT.apk:
One of the first things we noticed when testing my kernels was that something was causing unusually high CPU load and therefore battery drain. Investigations revealed that the cause was an app called MLT.apk which is included in the v50030a and v50030b ROMs under /system/priv-app/MLT/. This app has an unknown purpose - LG don't provide any details. The main point here is that to use a non-stock kernel you will have to disable this app. This is not negotiable. Something about the app does not play nice with anything but the official stock kernel. I am providing two flashable zips that will disable or enable this app (all they do is rename it).
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Installation Instructions:
Backup your device
Flash the MLTdisabler.zip in recovery
Flash whichever of my kernel zips you want from here (they are bumped already)
Reboot and profit
I recommend Trickster Mod or Kernel Adiutor for managing kernel settings but other kernel managers are available.
If you're wondering why the you only see "3.4.110" or whatever under About tablet, Software info - that's because LG have restricted the display of kernel information in the ROM. If you use xposed and G3 TweaksBox then you can enable extra info like in the screenshot below.
If at any time you decide you want to go back to the stock kernel then flash the MLTenabler.zip followed by this Stock Kernel zip (or just restore your backup).
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Custom Kernel Features:
Linux kernel 3.4.113
RAMdisk from v30B (less Korean language)
Built with Linaro 4.9.2
Build optimisations for GPU Driver
O3 build optimizations
MultiROM Support
LZ4 compressed for faster kernel loading
Higher CPU speed during boot
Code updates from LG VK81035A sources - thanks to @fefifofum
Palman emmc driver to fix SD umounts - thanks to @fefifofum
Gamma Fix - thanks to @aicjofs
Additional TCP Congestion Algorithms (Westwood as default)
Simple GPU governor - thanks to @faux123
Hardware accelerated floating point and encryption functions
CPU Underclocking down to 162mHz (for better battery at lower loads)
CPU Voltage Control
FastCharge
UKSM
Intelli-Thermal
Intelli-Plug Hotplug Driver (off by default)
Additional CPU Governors: Intelliactive, Intellidemand, IntelliMM, SmartMax, ZZMoove
Additional I/O Schedulers: BFQ, ROW, FIOPS, ZEN
F2FS filesystem support
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StockPlus Kernel Features:
Linux kernel 3.4.113
RAMdisk from v30B (less Korean language)
Built with Linaro 4.9.2
Build optimisations for GPU Driver
O3 build optimizations
MultiROM Support
Palman emmc driver to fix SD umounts - thanks to @fefifofum
Gamma Fix - thanks to @aicjofs
Additional TCP Congestion Algorithms
Code-base bug-fixes and improvements
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Changelogs (see GitHub):
Custom
StockPlus
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Downloads:
Builds of both Custom and StockPlus kernels are available to download HERE
MLTdisabler.zip
MLTenabler.zip
original LG Stock v50030a kernel (also works with v50030b)
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Source:
The project repo is here on GitHub
There are four main branches to be aware of:
Master - this is the original LG source code for v50030a kernel
Rebase - this is Master plus the latest commits from Linux Stable 3.4.y
Custom - this is Rebase plus the Custom kernel code
StockPlus - this is Rebase plus the StockPlus code
I hope that the Rebase branch will act as a stable codebase for other Devs to build kernels for v50030a and v50030b. I will keep it up to date with Linux Stable 3.4.y - please fork yourselves dizzy :silly:
The original source code from LG can be downloaded from here.
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Bug Reports and Feature Requests:
Bugs can be reported in the thread or at the GitHub Issue Tracker
Please provide as much information as you can about your kernel settings and any modifications to your ROM - also provide logs. If you're new to bug reporting then its simplest to use an app. If you install Kernel Adiutor and go to Settings you'll see a Debugging section. There you can save your logcat, dmesg and last_kmsg to internal storage. Please do this after you experience an issue and then zip them up and post them with a complete description of the issue.
Feature requests will be considered but please don't expect to get everything you ask for, I'm not Santa
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Credits and thanks:
Special thanks to my tireless tester @tmihai20 and to all the hard-working developers, in particular @faux123, @fefifofum, @mrg666, @hellsgod, @stratosk, @sleekmason
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Screenshots:
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XDA:DevDB Information
Fishears Custom Kernel and StockPlus Kernel for v500 Stock v30a & v30b 5.0.2 ROMs, Kernel for the LG G Pad 8.3
Contributors
fishears, fishears, tmihai20
Source Code: https://github.com/fishears/LG-V500-Kernel
Kernel Special Features:
Version Information
Status: Stable
Created 2015-10-06
Last Updated 2016-11-07

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Sounds great! Any chance for a gamma fix?

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This is great! Just flashed/booted and working fine so far.

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awesome sauce! seems like a flashing weekend! thank you dev!

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Thanks @fishears! Flashed custom version, no tweaking for now. First impression: feels a lot smoother than default kernel! Going to test battery tomorrow after charging. Great work so far! :highfive:

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MightyBen said:
Sounds great! Any chance for a gamma fix?
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Its possible. What needs fixing? Do you want to be able to adjust gamma values?

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fishears said:
Its possible. What needs fixing? Do you want to be able to adjust gamma values?
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Yes, a gamma fix would be awesome. Dark scenes in videos tend to be almost all black.
This kernel thread supposedly had a fix for old kitkat kernels. And there seems to be github sources for the fix:
http://forum.xda-developers.com/showthread.php?t=2741405

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MightyBen said:
Yes, a gamma fix would be awesome. Dark scenes in videos tend to be almost all black.
This kernel thread supposedly had a fix for old kitkat kernels. And there seems to be github sources for the fix:
http://forum.xda-developers.com/showthread.php?t=2741405
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I'll have a look.

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@fishears: I am available for testing, as always . I also need to know how to check if the fix actually works.

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tmihai20 said:
@fishears: I am available for testing, as always . I also need to know how to check if the fix actually works.
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Good. I was going to ask if you d be up for continuing and testing betas for me. To test I guess we'd need a dark scene on YouTube, like from a Batman maybe. But I haven't even looked at the code yet. I'll send you a PM when I have something.

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Alright, just flashed the custom kernel, will report about my build and battery life on the weekend. Seems smooth and stable so far!

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Would you add Multirom's support?

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Was there any Multirom support before? It is the first time I hear it for the G Pad 8.3. It has little internal storage anyway and using an SD card would mean that you can't remove it. This is also very hard to test, since it takes a lot of tinkering with internal memory and microSD partitioning. @Maraudeur, do you have a link to a git repo for th G Pad 8.3?

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tmihai20 said:
Was there any Multirom support before? It is the first time I hear it for the G Pad 8.3. It has little internal storage anyway and using an SD card would mean that you can't remove it. This is also very hard to test, since it takes a lot of tinkering with internal memory and microSD partitioning. @Maraudeur, do you have a link to a git repo for th G Pad 8.3?
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Don't worry, I've just ported @tassadar's kexec hardboot patch and @beroid has already done this
My Custom kernel should have kexec hardboot support in the next release but I won't be testing it...

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Finally a custom kernel for stock Gpad 8.3 roms! thanks for the work and love for this awesome but under rated tablet, i'll be testing the kernel

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fishears said:
My Custom kernel should have kexec hardboot support in the next release but I won't be testing it...
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Thank you so much, man !
tmihai20 said:
Was there any Multirom support before? It is the first time I hear it for the G Pad 8.3. It has little internal storage anyway and using an SD card would mean that you can't remove it.
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Firstly, there is multirom by @beroid for long time yet. But he closed thread and doesn't support it anymore. Secondly, I have got HTC M8 with the same storage space - 16Gb and multirom runs very good on it. It's sufficient only two ROMs in most cases - stock and CM or AOSP.