[SOLVED] v9.0.0 - 7" Official Touchscreen - Whiteout

[steve.goodine]

IIRC there is an issue in the kernel repo about rotation being broken.

Thanks to Jedrik , a few posts down
I was able to fix my 7" touch screen refusing to rotate 180
by applying this instruction
Maybe it will cure other problems as well.

Please change the option:
System -> Startup option -> Integrated audio
to Firmware Mode (Legacy)