Installing Ubuntu Touch seem to break sensor firmware(?) when going back to stock Android
I made a post about this in the Fairphone Forum and will post a TL;DR below: https://forum.fairphone.com/t/accelerometer-screen-rotation-other-sensors-not-working/87942
Also want to say like in the post, I fully know the risk of experimental images, and don't blame anyone. Love that you've made Ubunto Touch work as great as it does for the FP4. Just hoping there's a way to fix this:
This is what has happened for me and some others: I flashed Ubuntu Touch to my FP4 same day as it was released, and most things worked great, including sensor based functionality like screen rotation (basically everything accelerometer and gyro related). However, when I decided to try out some other Android ROMs, I noticed all sensor functionality, as well as running diagnostic apps did not pick up any data from my sensors at all. This includes flashing the complete stock offline installer for FPOS. However, if I go back to Ubuntu Touch, the sensors all work again! Could there be that when flashing UT, some drivers or firmware are overwritten, and then the FPOS stock installer doesn't contain the original drivers? And do you know if there is a way to fix this?
Also, maybe a warning about this should be posted somewhere?