DESCRIPTION
Hey guys, I have started a custom Kernel based on LineageOS sources with 98% CAF. So I would like to share my own performance and usability improvements with minimal feature and enhancements on top. The intention is to have a minimal light-weight kernel that is very fine tuned for the device.
FEATURES
- Minimal Kernel with a stripped defconfig base to be more streamlined and have less memory footprint
- User space display color calibration (KCAL) with screen calibrated against iPhone 8 Plus, also helps reducing screen retention
- Schedutil governor making use of EAS features with updates from Linux 4.4 and 4.12
- Up to date with LineageOS sources for maximum compatibility and security bugfixes
- Memory and cache subsystem optimizations, you will feel it
- Adaptive LMK enabled by default
- Transparent Hugepages are enabled
- ZRAM/Swap partition is disabled by default
- BFQ IO scheduler set by default to avoid slow-downs on task intensive scenarios
- No overclocking was chosen to avoid unnecessary heat, optimizations were focused on other different areas
- Kernel Samepage Sharing enabled with deferred timer by default to gain some memory usage optimizations, the process sleeps on regular basis and I've profiled it so that there's no battery drains due to it
- Simple temperature controls for msm_thermals exposed
- Compiled with GCC 6.x optimized toolchain and -O3 plus other hardware specific flags
- Undervolted the Adreno 530 GPU voltage rail to keep things cooler
- CAF Rebase on major portions of the Kernel has helped lower the memory footprint a lot
- ES9218 Quad DAC automatic toggling working inside the kernel for headphone HIFI playback, please read here for details
DOWNLOADS
SOURCE
NOTES
- Here is a GeekbenchV4 result example : http://browser.geekbench.com/v4/cpu/761887x
KNOWN BUGS
- USB OTG is untested at the moment.
- Could not disable the ZRAM/Swap partition by default yet, might be a problem with current TWRP that I haven't figured out.
I would also like to thanks to various people who contribute tremendously such as:
@x86cpu
@EvilHowl
@USA-RedDragon
@savoca
@albinoman887
@emdroidle
@Rashed97
@joshuous
@RenderBroken
and many others!
<< If you like my work here is my hat, please donate! >>
XDA:DevDB Information
Gamma Kernel, Kernel for the LG V20
Contributors
Omar-Avelar
Source Code: https://github.com/oxavelar/V20-Kernel-Gamma
Kernel Special Features:
Version Information
Status: Stable
Current Stable Version: 8.2.0
Stable Release Date: 2018-06-07
Created 2018-05-10
Last Updated 2018-06-07
You would need to flash LOS again. Dirty flash should be fine.
Of course lol. Batteries don't determine if a kernel is compatible. This is going to be off topic but what extended battery did you get? I'm thinking of getting one myself.
Next version has those video fixes, but I am testing it first as there is an uevent bug that causes bad idle battery right now. But I have some ideas on the problems... Some init*.rc bugs are also messing the sleep of some devices (RPM dmesg spam) with Gamma for 15.1
If everything goes right this version will be up today or sometime this week
Sorry for the late reply. I did not get notified about your reply to me and I did not notice it until now aha....Anyway, I went ahead and purchased the Perfine 10,500 mah battery. I hope it lasts me for a few years. I can't stand having to constantly charge my phone a few times a day with 2-3 hours of SOT. :silly:
This post will serve as the link you can give to people who request second-screen versions of Gamma, to avoid clogging unrelated threads.That's how it's meant to work.
---------- Post added at 08:21 PM ---------- Previous post was at 08:13 PM ----------
@Omar-Avelar if you don't mind me asking, what's your plans for the second screen builds? I successfully built versions of Gamma v26 with the second screen working fine on x86cpu's second screen LineageOS builds for multiple variants, and I was just wondering because people have been asking in multiple threads for a version where second screen works (the previous ones you had linked didn't work, hence my attempts). If I've got your permission to, I'm happy to build second-screen versions of Gamma for people and their variants to use privately if all you want to focus on is Gamma itself, but if you plan to integrate second-screen builds automatically into your build environment, or even into the one Gamma version somehow, I wouldn't want to intrude so here I am asking. I'm happy to PM you about it if you'd like me to but it's 5am where I am so that'd be later today when I wake
