[achilles_85]

Your usecase is not supported as kodi as WM is not supported.

The only possible option is to use the openbox?
PS I create systemd service running this script

bash:
#!/usr/bin/env bash

OUTPUT=`xrandr -display :0 -q | sed '/ connected/!d;s/ .*//;q'`

xrandr -display :0 --output $OUTPUT --set "Broadcast RGB" "Full"

I can run it manually after kodi started, but automatically this service doesn't start, in journalctl show error that it cannot open display