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Old 10-18-2004, 02:50 PM   #1
ocset
LQ Newbie
 
Registered: Mar 2004
Posts: 22

Rep: Reputation: 15
Gtk-WARNING **: cannot open display


Hi

I am using SUSE 9.1 and am having a peculiar problem that I don't understand.

If I log into KDE as user1 and run firefox (or any gui app) at the command line, no problem. If I "su - root", set DISPLAY=ipaddress_of_machine:0.0, I get a long wait and eventually an error

"Gtk-WARNING **: cannot open display"

The same happens when I log into KDE as root (run 'xhost +' just to be sure) and "su - user1", set DISPLAY=ipaddress_of_machine:0.0

If I don't set the DISPLAY variable, I get the error instantaneously, as one would expect. I don't know what else to look for and the long delay before the error makes me thing there may be something else wrong or something is not set up properly.



Thanks
O
 
Old 10-18-2004, 03:03 PM   #2
bobwall
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Registered: Jul 2004
Location: Milpitas, California
Distribution: 1/2 Debian 1/2 my own
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It doesn't matter what display you set to use. What matters is the access control list (correct me if I'm wrong) of the XServer you're using. By default, whoever created the X session will be the only one who can use it. To allow other users to use the X server, you have to mess around with the xhost command. I'm lazy and just use xhost + which allows any client to connect.
 
Old 10-18-2004, 03:18 PM   #3
ocset
LQ Newbie
 
Registered: Mar 2004
Posts: 22

Original Poster
Rep: Reputation: 15
Hi bobwall

That was one of the first things I tried (see original post) which is why this is frustrating me so much. In all the time I have used Linux, "xhost +" and "DISPLAY=..." solved any display issues.

Any more suggestions?
 
  


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