[OnePlus 3T ROMs, Kernels, Recoveries, & Other Deve] andip71:
Hi all,

some of you know me from the other OnePlus or Samsung devices areas, where I provide my kernels already for more than three years to OnePlus 3, OnePlus 2, OnePlus One, OnePlus X, Galaxy S5, S3 and Note 10.1 users for all sort of platforms (Samsung, LineageOS, Cyanogenmod, Omnirom etc.)

Thanks to generous supporters, I now own a second OnePlus 3T device which allows me to also provide a LineageOS kernel for this device.

Please note:

I am

not

heading to have as many features as possible implemented, this is not my design goal. If you are more into that, move on to other kernels. If you are searching for a good mix of improvements and new functions while not sacrificing stability, you are welcome here (see below the history section for more info).

Important notes

When using new anykernel concept Boeffla-Kernel: Flash stock kernel of rom first !

Make sure you flash the correct kernel version, depending on whether you really use LineageOS or a different OS !!!

Also note: You

have to

use Boeffla-Config app which I provide on my homepage to tweak the kernel. 3rd party apps will not be able to unleash the full power of the kernel.

Compatibility

Important: This kernel is only meant to be compatible with official LineageOS and nothing else.

So when the kernel does not run on custom rom XYZ, do not even bother me with it or ask hundred times in the thread for compatibility.

I could not care less about it !!

Installation

Read the install instructions in the support section on the Boeffla Site.

Support

First read the FAQ section on the Homepage !!!

Click here to learn about all possible kernel settings in the config app (quite outdated, as it is focused on S3 still).

Click here to learn about using the config app (quite outdated, as it is focused on S3 still).

I will refuse to give support if you do any undervolting/overclocking and experience freezes or hot reboots.

I will also not provide any support if you do not use Boeffla-Config app to tweak the kernel, other 3rd party tweaking apps are known (and intended) to cause issues.

I will refuse to give support if you have xposed framework installed and reporting any kind of weird issues. My opinion to xposed it quite clear: too powerful for >90% of the users that just mess up their system with it.

Otherwise, you can get in touch with me via the support e-mail address: support@boeffla.de

Please provide kernel version, rom version, a detailed issue description and ideally supporting screenshots or log files.

Change logs

(you can also access them directly in Boeffla-Config V2 by pressing menu and selecting "change log...")

Change log for LineageOS 14.1 kernel - Click here

Known issues

None

Features

Note: This kernel only runs on LineageOS 14.x for the OnePlus 3T - nothing else !!!

Support of anykernel concept (only latest kernels) - flash stock kernel before flashing Boeffla

Full integration with Boeffla-Config V2 (you need at least version 2.4.33 or higher !!!) configuration app (get it from http://www.boeffla.de) to configure all kernel settings

The two CPU clusters (big and little cpu) can be configured completely separate in terms of min/max frequencies, governors and CPU core profiles

Additional governors: Impulse, zzmoove, elementalx, conservative, ondemand, blu_active

Additional schedulers: fiops, bfq, sio, sioplus, fifo, vr, tripndroid, zen, maple

Configurable GPU boost (low, medium, high)

No CPU overclocking - not planned as well for next future, the OP3T is fast enough with standard frequencies

No GPU overclocking, no CPU and GPU voltage interface - this will not come in future as well as I do not like it

CPU core profiles to restrict number of CPU cores being used (the OP3T does not hotplug based on load)

Boeffla-Sound engine: Headphone volume and speaker volume (only lowering volumes for speaker), microphone gains (only experimental)

Dynamic FSync (activated if screen on, deactived if screen off), configurable

Input boost frequencies and duration configurable per CPU cluster, input boost switch

Show CPU frequency usage per CPU and frequency in Boeffla-Config

Show GPU frequency usage per frequency in Boeffla-Config

USB fast charging enabled (up to 900 mA instead 500 mA)

Boeffla charge analysis (display of charger type and charge current in Boeffla-Config app in real time)

Support for "pocket mode" - check out Boeffla Pocketmode app on Google Play Store if your rom has no pocket mode support

Boeffla touchkey LED control

Boeffla generic wakelock blocker V1.1.0 (documentation)

KCal V2 Color control

Display backlight limits configurable (to avoid display brightness gets too low in some situations)

Display backlight dimmer

Swipe2sleep gestures

SD card read ahead buffer configurable (default increased to 1024 kB)

Ext4 File system tweaks (default to on, can be disabled)

Kernel logger (dmesg) configurable

CIFS support (module, do not mount inside /data, if you rooted with Chainfire SuperSu, make sure you uncheck the namespace separation in SuperSu app)

NFS support (module)

NTFS support (module)

XBox support (module)

OTG-Ethernet support (module)

TCP Congestion changed to Westwood

Many additional TCP congestion algorithms available

Entropy values configurable

Hardware touch keys and home button are locked as long as screen is in use (touched) for better usability - configurable

Swap supported

Support for extended slider functions on certain custom roms

Remove verifiedbootstage flag to avoid triggering safetynet

Various minor kernel tweaks

Doze mode configurable in Boeffla-Config

Full selinux strict support (switchable to permissive on demand)

Show speedbin information (PVS level) in Boeffla-Config app

init.d support (in /system/etc/init.d - set correct permissions!)

Automatic EFS backup

Integrated full busybox 1.26.2 (own compilation)

Kernel initialisation log file (with history of 3 log files)

Emergency reset script automatically placed into /boeffla-kernel-data folder of your internal memory

Google gcc 4.9 toolchain (64 bit) used for best stability

Always based on latest official LineageOS kernel sources (http://github.com/LineageOS/android_kernel_oneplus_msm8996)

Download

For all information and downloads (stable AND testing versions), visit the Boeffla-Kernel homepage:

www.boeffla.de

History and design targets

Basically I created my first Boeffla-Kernel in 2012 as there was no kernel for the Samsung Galaxy S3 around that had exactly the mix of functionalities that I wanted. I wanted to have full flexibility in undervolting and charge rates for instance, but did not like the sharpness and/or brightness tweaks many kernels have implemented as per default.

Hence, I began to create my own kernel after a while, adding all the features I like. This is the result of my work, which in the end I decided to share with you. I hope you like it as much as I do.

The objective of this kernel is to have a kernel for daily use. It does not aim for best battery life, or best smoothness or best benchmark scores. Also it does not aim to have the broadest feature set available everywhere.

It aims more for a good mix of all, not sacrificing stability and functionality in the end.

And - most important: It aims to stay quite close to stock !!!

These design targets are also valid for the OnePlus kernel here!!!

This said, I will definitely NEVER implement:

things I do personally not need

things I do not like

things that are in any way dangerous

anything which is highly experimental

custom hotplugging algorithms

a CAF based kernel

anything that requires upstreaming of kernel parts to a higher kernel major version

So do not even ask for it if it falls into the listed categories. Everything else I am happy to check and decide.

And: I do not really care about benchmark numbers, they say almost nothing as long as something is not completely wrong. Important for me is the feel-good factor.

I am also not interested in gaming at all, so never expect a gamer kernel. It will just not happen...

Compatibility

To reiterate it again: Flash the correct kernel depending on whether you are using LineageOS or another rom !!!

Configuration of the kernel

To tweak and configure the kernel, manually load and install the app "Boeffla-Config V2" from the downloads section on www.boeffla.de.

You need at least version 2.4.33 or higher for the OnePlus 3T Boeffla Kernels.

Donation

If you like my work, feel free to donate: Donation-Link

If you donate at least 2,49 EUR (to be in line with the donation app prices on Google Play store), you will receive a personal donation code which unlocks some nice little comfort functions in Boeffla-Config V2 on top.

Source code

All sources can be found in my Github repository: http://github.com/andip71

Credits to supporters

Many thanks to the following supporters, that helped in funding an additional device to allow development of this kernel for the OP3T (chronological order:

ReAnimat, midoclaze, owen g., DJSubterrain, ArminT, w0lf, f616, TGX03, ScratMan, matze779, nihilista, Kirahvi, Ingo, Raimu, albireox, #lopamo72, timobayl, Alienrobot, Selim B., Ukcain, Christian B., Carina S., schvagier, Michael L., Jason K.

Credits to developers

Of course, I had never been able to create all that by my own. So I want to give credits to the really good developers around, that have given me all the inspiration and from which I cherry picked lots of the implemented functionalities:

* ZaneZam

* Grarak

* Yank555

* Hardcore

* Chainfire

* AndreiLux

* Netarchy

* Gokhanmoral

* Simone201

* Mialwe

* Entropy512

* Faux

* Harunjo

* FranciscoFranco

* Ak

* Osm0sis

... I just hope I did not forget someone. If so, please let me know and I will add you of course.

Thanks to all of you for your great work !!!

Disclaimer

*** As always - Flash on our own risk! ***

Make sure you flash the correct version depending on your firmware version!

I can and will not take any responsibility for bricked phones or lost data.

It is generally recommended to run a complete Nandroid backup in your custom recovery and safely store your personal data before you flash a new kernel.

Cheers and enjoy

Andi