09-15-2009
Also, I think this may be a case where you are using a hammer to turn a screw. You may not have to undo your changes when you can perhaps restore your earlier settings to the GUI.
Run this command:
system-config-display
as root.
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XDG-SU(1) XDG-SU(1)
NAME
xdg-su - run a GUI program as root after prompting for the root password
SYNOPSIS
xdg-su [-u user] -c command
xdg-su {--help --manual --version}
DESCRIPTION
xdg-su provides a graphical dialog that prompts the user for a password to run command as user or as root if no user was specified.
xdg-su is for use inside a desktop session only.
xdg-su discards any stdout and stderr output from command.
OPTIONS
-u user
run command as user. The default is to run as root.
--help Show command synopsis.
--manual
Show this manualpage.
--version
Show the xdg-utils version information.
EXIT CODES
An exit code of 0 indicates success while a non-zero exit code indicates failure. The following failure codes can be returned:
1 Error in command line syntax.
2 One of the files passed on the command line did not exist.
3 A required tool could not be found.
4 The action failed.
SEE ALSO
su(1)
EXAMPLES
xdg-su -u root -c "/opt/shinythings/bin/install-GUI --install fast"
Runs the /opt/shinythings/bin/install-GUI command with root permissions.
AUTHOR
Kevin Krammer, Jeremy White.
<kevin.krammer@gmx.at>
<jwhite@codeweavers.com>
This is release 0.5 of the xdg-su Manual 07/31/2006 XDG-SU(1)