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

[Iacov]

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)

thank you for posting that! it enabled me to have a correct rotstion, but with the remaining issue that the GUI does not stsrt

where did you find the hint to switch to firmware mode? and could you resolve your issue with the 7" display?