[fritsch]

sTry:
sudo apt install intel-media-va-driver-non-free

And first make sure to go back to a sane base.

Afterwards:
export LIBVA_DRIVER_NAME=iHD
vainfo | pastebinit

If that works, make sure to expose the env before starting kodi, like e.g.

Code:

sudo sh -c "echo 'LIBVA_DRIVER_NAME=iHD' >> /etc/environment"

and reboot.