Must come back sooner than expected. It does not work that way. After making some changes to my graphics card any attempt to save to the xf86cfg file fails even though I believe to have opened it as user "root".

When I open a new console, type "su" and then the root passwort the authentification fails obviously because of a wrong root password. But that is not right since it was the right root password I entered.

When I choose console for user "root" and then enter the root password this works but I am not able to save any change made in xf86cfg.

By the way, is not there a more comfortable way for setting the graphics card, monitor etc .... as I mentioned the KDE menu did not allow me to access this specific part of the menu (in spite of an icon a X appears before the menu description)

Any help is greatly appreciated.