in order to fix a problem with the setup of the screen brightness I try to create a xorg.conf
This is done by the command X -configure right?
Trying to run this command as root, I will get:
Fatal server error: Server is already active for display 0 If this server is no longer running, remove /tmp/.X0-lock and start again.
Trying to run this command in recovery modus, I will get the same. After remove the mentioned file I get the error: cannot create file /tmp/.X0-lock
Just to make sure: Yep I have the rights as I am logged in as root.