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

[Hermann J. Beckers]

>
> Sigh, yes a typo, and that was part of the answer. Now the attempt to
> run 'synaptic &' goes far enough that I get the [1] pidnbr display and
> a new bash # prompt, but synaptic still dies with the old familiar
> complaint.
>
>
>From your previous post:

>> 1. xhost +localhost
>> 2. export DISPLAY=localhost:0,0
>> 3. sudo su -
>> 4. synaptic &

switch steps 3. and 2. You have to define DISPLAY for the new root 
environment.

Yours
hjb