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Translation(s): English - Italiano - Francais~

Common error messages with XWindowSystem

Xlib: connection to :0.0 refused by server

  •  Xlib: connection to :0.0 refused by server 
 Xlib: Client is not authorized to connect to Server
 Application initialization failed: couldn't connect to display :0.0

  • The X-server refused to be the display for the program you started, this usually happens when you changed to another user-id with su or when you're remotely logged in to another host.
    This normally happens to me when I've su'd to 'root'. Solutions:

  • use "ssh -X"

  • or use sudo

  • or Try exit from 'root' and enter 'xhost +localhost'. Afterwards, I can su back to 'root' and execute the program. There are certain security implications in doing this. "man xhost" for more information. -- StephenHargrove

See also: XWindowSystem