I'm in the same boat with my MiPad 1 Mocha! But the build of LineageOS 14.1, exactly from that forum thread you linked, was giving me some major issues:
* A very bad one is that the tabled would suddenly reboot, from time to time, for no apparent reason (e.g. it might reboot just after opening the application drawer).
* Even worse, using cabled headphones with the audio jack would be dangerous!! because some times a very high pitched beep might start sounding with max volume.
Those two issues are clearly a product of how these alternative ROM builds are done: by some random hobbyist, in their free time, no professional QA at all, and some times changing internal system parameters without really understanding very well what they are doing.
All in all, pretty much an exercise on luck. The high pitched sound was the worst for me, it worsened my tinnitus problem for several hours afterwards...
In the end I tried my luck again with the AospExtended v5.8 [1] and this time things seemed to work out much better. But still, I would never personally recommend an unofficial Android ROM, ever. It feels like sending people to take a stroll through a mine field.
Hey, I deleted all the partitions of the device before flashing. Did you try flashing again? Because I did not face any such problems. Sound is a bit quieter, but that's pretty much it.
Yes, I merged the 2 partitions and also installed the binary blobs... I've been using alternative ROMs for my Android devices for some years, so I know the drill. I even tried installing a couple times, but the issues persisted.
* A very bad one is that the tabled would suddenly reboot, from time to time, for no apparent reason (e.g. it might reboot just after opening the application drawer).
* Even worse, using cabled headphones with the audio jack would be dangerous!! because some times a very high pitched beep might start sounding with max volume.
Those two issues are clearly a product of how these alternative ROM builds are done: by some random hobbyist, in their free time, no professional QA at all, and some times changing internal system parameters without really understanding very well what they are doing.
All in all, pretty much an exercise on luck. The high pitched sound was the worst for me, it worsened my tinnitus problem for several hours afterwards...
In the end I tried my luck again with the AospExtended v5.8 [1] and this time things seemed to work out much better. But still, I would never personally recommend an unofficial Android ROM, ever. It feels like sending people to take a stroll through a mine field.
[1]: https://forum.xda-developers.com/t/rom-8-1-0-20200224-unoffi...