I want to edit the
/etc/X11/xorg.conf file but I can't save the file. It says "permission denied."
How can I edit the file?
Open a Terminal and then :
Open with Gedit...
open with nano...
now you can edit ..
P.D make a backup before change the file so you can revert your modification...
Probably you're trying to edit the file without permissions. First make a backup of your file in case something goes wrong.
Then, you can edit the file with you text editor, for example
And save it.