Am Sonntag, 20. Februar 2011 schrieb Paul Cartwright:
> On 02/20/2011 11:43 AM, Mag. Dr. Nikolaus Klepp wrote:
> >> >  from the debian menu, clicking synaptic does nothing.
> >
> > try this:
> >
> > $ xhost +
> > $ su
> > # synaptic
>
> # xhost +
> Invalid MIT-MAGIC-COOKIE-1 keyxhost:  unable to open display ":1.0"
> #

oh, i overlooked that tart with ":1.0". try this:

$ xhost +
$ su
# DISPLAY=:0 synaptic