Remove the file so that there is no file called /etc/X11/xorg.conf. The bad solution is `sudo rm /etc/X11/xorg.conf` (deletes the file), the better solution is `sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.backup` (moves the file, so that you can move it back later if you wish).
When the file is gone, Xorg will automatically create a "minimal" xorg.conf, but there will be no settings that can disturb the screen resolution setting process. Basically, this eliminates the potential for errors due to problems in xorg.conf.
Remove the file so that there is no file called /etc/X11/xorg.conf. The bad solution is `sudo rm /etc/X11/xorg.conf` (deletes the file), the better solution is `sudo mv /etc/X11/xorg.conf /etc/X11/ xorg.conf. backup` (moves the file, so that you can move it back later if you wish).
When the file is gone, Xorg will automatically create a "minimal" xorg.conf, but there will be no settings that can disturb the screen resolution setting process. Basically, this eliminates the potential for errors due to problems in xorg.conf.