Gtk-WARNING **: cannot open display: :0

I have installed a gparted on my Debian and when I tried to run it as a root from the terminal the unexpected message has appear:

(gpartedbin:14177): Gtk-WARNING **: cannot open display: :0

Simple solution for this is:

  1. As a user (non root) type:
    xhost +local:root

    Message should appear:

    non-network local connections being added to access control list
  2. As a root type:
    export DISPLAY=:0.0

Now you should be able to run your application. For me it works!

One response to “Gtk-WARNING **: cannot open display: :0

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