In already tried several rotation apps in the play store. I tried via root shell the commands:
settings put system accelerometer_rotation 0 and
settings put system user_rotation 0 both are working fine on my phone, but not on my tablet.
You should try some rotation control app from play store, like Rotation Control which can rotate the screen in any direction you want (like reverse portrait) But you should also note that it's not possible with every app, because maybe the layout is not provided or the layout is forced to be in portrait mode, in that case no app can help you. There ain't much apps available specifically for xxhdpi & xxxhdpi screens and so you're not left with much choice but to work with the way it is....
I did not found any solution. I installed the new PhoenixOS. It works good, and the orientation sensor works too. Maybe we will find a solution for android x86 soon.
I face same problem on chuwi Hi10 x. Reason was if your tablet orientation sensor is not recognized Or defined in Android it forces screen in one orientation To solve this Open init.sh file which in device root /etc/init.sh Find the following line "has_sensors = false" and make it = true this tell android that you have orientation sensor even if it actually not recognized it Then reboot Now you can change orientation using any orientation app.