Originally Posted by itstootuff
i very recently shifted to linux : fedora . I am using 2.6.25-14.fc9.i686.
The tweaking on linux requires to edit some system config file and that requires switching to root (while i am actually logged in as normal user).
I do it by typing 'su -' command in terminal. But then i cannot open gedit to edit the files. it says
No protocol specified
cannot open display:
Run 'gedit --help' to see a full list of available command line options.
If i login as root and then try to open gedit through terminal - it works..
X windows display variable isn't set when you SU to root on a terminal window. After you SU to root at the terminal, you can type in "export DISPLAY=0:0", and try it.