This is LineageOS 19.1, which is based on Android 12, for the WiFi-only variants of the Samsung Galaxy Tab A 10.1" (2016), with model SM-T580 and codename gtaxlwifi, and the Galaxy Tab A 10.1" (2016) with S-Pen, with model SM-P580 and codename gtanotexlwifi. LineageOS doesn't need much of an introduction - It's a well-known custom firmware/Android distribution.
As was the case with LineageOS 18.1, I've taken over maintaining 19.1 from @followmsi, and my 19.1 builds continue on from his 19.1 builds that were intended for use by users. To update from his builds, my builds can simply be installed on top of an existing install from his builds without doing anything further (or "dirty flashed").
For those running 18.1, or probably even 17.1, upgrading to 19.1 is possible through the procedure I've explained before here and here (except with 19.1/Android 12 and 18.1 rather than 18.1/Android 11 and 17.1 for that second post). I highly suggest backing up any important data before trying to upgrade. In the unlikely case the upgrade fails, and it doesn't boot, data would need to be formatted.
For those wanting to disable the widely disliked taskbar, instructions for doing so are in the first section of my post here.
Downloads:
Note: While these builds are mainly intended to be used on the WiFi-only variants of these devices, they can be installed and used on LTE variants if you can go without mobile networking (of course), GPS and vibration.
I'm only going to try getting builds up for the LTE variants if I get one in the future. Trying to do so without direct access to an LTE variant device is very difficult and not really feasible (as I've realized after thinking in much more depth about it since thinking I'd be able to do so without an LTE variant device a long time ago).
For SM-T580/gtaxlwifi:
Latest build from 20220620 (with security patch level 20220605): https://drive.google.com/file/d/1onRpEeNRkFpVrZqP4bFbZoDyf9N1GkVY/
Folder for builds (which contains text files with MD5 and SHA256 checksums for the latest build, and a folder containing previous builds): https://drive.google.com/drive/folders/1S3NRiTP2jr9gRtSMKoKoaoMu75g_FJM4
For the T580, the latest official TWRP build from here should be used. If installing a build for the T580 to the LTE variant, with model SM-T585 and codename gtaxllte, keeping in mind some functionality will of course be missing as described in my note, the latest official TWRP build for gtaxllte from here can also be used.
For SM-P580/gtanotexlwifi:
Latest build from 20220620 (with security patch level 20220605): https://drive.google.com/file/d/1WgT1ZCz5sqf7g41OECqCyULmCO-ss2X3/
Folder for builds (which contains text files with MD5 and SHA256 checksums for the latest build, and a folder containing previous builds): https://drive.google.com/drive/folders/11pcp9NZf0ovelvT7oxfhoem6-utpSao8
For the P580, I've made unofficial TWRP builds from an updated device tree and the same kernel sources used for these LineageOS builds that must be used.
Download link for an image of my latest TWRP build: https://drive.google.com/file/d/1TAFLVpxdYQNvfvUPS_BGKx3imphR1Wd2/
Download link for a tar archive containing it for installation via Odin in the AP slot: https://drive.google.com/file/d/1Ay55ntZj7Uptzm--hiCaeG1C5lamQ1fG/
Changelogs:
Known issues and workarounds (if any):
Sources:
A manifest containing all of the necessary repositories to make a build for either the T580 or P580 is in this repository on branch lineage-19.1: https://github.com/TALUAtGitHub/gtaxlwifi-manifests
Starting from my initial 19.1 build, a new common tree setup, with new gtaxl common device and vendor trees, along with new gtaxlwifi and gtanotexlwifi device and vendor trees to use with them, is used to create builds. Before, the gtaxlwifi device tree was a standalone tree, and the gtanotexlwifi device tree was a complete copy of it with changes for the P580 on top, meaning a lot of stuff was duplicated between them. With such new setup, that duplication no longer exists, and build times when building builds for both the T580 and P580, one after the other, are massively decreased.
18.1 builds for 20220423 onwards are also built with that setup, only without changes for Android 12.
Thanks to:
@Valera1978 - for all of the previous work for the T580 (and T585) long ago.
@followmsi - for fixes to various issues and other improvements, for useful information, and for working with me on much of this stuff.
Anyone who has previously tested anything new I've put up for testing, reported results, and gave details for me to get it working if it was necessary.
The Lineage team - for the Android distribution itself.
...and everyone else who has worked on anything that is in use.
