Programs unable to open display

Doogee · Post by **Doogee** » Fri Mar 26, 2004 4:29 am

Short and sweet, how can i resolve this problem? This happens for all users (all two of themI! Root and I)


root@dans-computer:/etc# xcdroast
 
Gtk-WARNING **: cannot open display:
root@dans-computer:/etc# evolution
 
(evolution:32536): Gtk-WARNING **: cannot open display:

root@dans-computer:/etc# nautilus
 
(nautilus:32538): Gtk-WARNING **: cannot open display:
root@dans-computer:/etc#

shuiend · Post by **shuiend** » Fri Mar 26, 2004 5:41 am

Do you have X11 running? That could be a problem if you dont have that running. Also if you are in kde and want to run them why dont you just goto the run choice in the menu and put it in there?

Doogee · Post by **Doogee** » Fri Mar 26, 2004 5:45 am

Yes, I use Gnome, hence I have X11 running, i am not as stupid as I look.

I need to run applications as root (xcdroast) so i can set them up. This is why i'm trying to run them from a command line.

Void Main · Post by **Void Main** » Fri Mar 26, 2004 6:51 am

Before you type the "su" command type "xhost +localhost" which will give all users on the local machine permission to run X apps on your X server. Or worse yet just "xhost +" which will allow anyone anywhere to display X apps on your X server. By default only the logged on user on the local machine has permission to display X apps on the local server. This will stay in effect until X is restarted or you take away permissions with "xhost -xxxxx".

Other distros set up the X authentication automatically when using the su command. I would have to dig through the scripts to see exactly how Red Hat does it, don't have time right now though. Probably using the "xauth" command in some incarnation.

Doogee · Post by **Doogee** » Fri Mar 26, 2004 7:02 am

Thankyou

Master of Reality · Post by **Master of Reality** » Tue Mar 30, 2004 8:16 am

i just have xhost +localhost in my .zshrc but ionly have one user other than root.

Calum · Post by **Calum** » Tue Mar 30, 2004 12:55 pm

more info on this here, which i found useful after puzzling over this one for a while:

http://promote-opensource.org/forums/viewtopic.php?t=95