When you log in as a regular user, and you 'su -' to root, you have to define you 'export DISPLAY=:0.0' again. The minus sign after the su command means that you want to assume root's environment. So if there is not an explicit export DISPLAY statement in /root/.bash_profile or /root/.bashrc, the root environment has no idea what the display should be.
Hope this helps -mk > -----Original Message----- > From: Erik van der Meulen [mailto:[EMAIL PROTECTED] > Sent: Wednesday, April 11, 2001 5:26 AM > To: debian-user@lists.debian.org > Subject: Fw: su in X > > > Dear list, this should be easy, but I have not managed yet... > I run Gnome desktop as a 'regular' user. If I need to do > systemsmanagment, I > do 'su -' in a terminal to get root access. Only if I need to > start an X app > (just installed red-carper), I get an error: > > Gtk-WARNING **: cannot open display: > > Can anyone suggest how to avoid this? I recall something with export > display, but do not get it to work... > > Thanks a lot. > > Erk van der Meulen > > NB I probably end up wanting to have a menu-button for this > application. Is > 'sudo' than the way to go? > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact > [EMAIL PROTECTED] >
