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

[Matthew Carpenter]

On Sunday 09 October 2005 23:03, jamesm wrote:
> > 1. xhost +localhost
> > 2. export DISPLAY=localhost:0,0
> > 3. sudo su -
> > 4. synaptic &
> >
> > I get the error Gtk-WARNING **: cannot open display:, and I'm unable
> > to find an answer. There are lots of reported problems, but no
> > answers.
>
> I have the same problem.
>
> I think it's because the X session is owned by the logged in user or
> some such.

I've dealt with this problem for some time, now.  It seems in recent months 
(probably about a year or two), X simply no longer honors the xhost 
+localhost method.  If I do a "xhost +" everything works great when I su -
But sudo seems to figure it all out, so I'm good now.
If all else fails, kdesu and gksu seem to work.

$ kdesu synaptic &

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