[Python-apps-team] Bug#864603: gufw bug: GUI protocol error?

[jensome at web.de]

On Sun, 02 Jul 2017 12:56:01 +0300 era <era+debian at iki.fi> wrote:
> This looks vaguely like it cannot access your desktop. Are you
running
> this as root? What's the value of $DISPLAY immediately after you
start a
> new terminal? If you are running gufw with sudo, maybe that's the
cause
> of your problem?
> /* era */
> 
> (Just a bystander.)
> 
> -- 
> If this were a real .signature, it would suck less.  Well, maybe not.
> 

~$ echo $DISPLAY
:0

I run this once as a normal user (root permission are still requested) and once as root directly, both with the same result

I am running the default gnome desktop