Bill Cole macportsusers-20171215 at billmail.scconsult.com
Fri Nov 12 17:51:39 UTC 2021

On 2021-11-11 at 18:07:45 UTC-0500 (Fri, 12 Nov 2021 00:07:45 +0100)
Tom <macpro at t-online.de>
is rumored to have said:

> Hi,
> when trying to run an X11 program, I get the following error message:
> (putty:8198): Gtk-WARNING **: 00:06:49.190: cannot open display: :0

Which means that your environment has the DISPLAY variable set to ":0" 
which indicates the first display on the local physical machine, or at 
least it would on most platforms that support X11. On a Mac, it's much 
more complicated and your DISPLAY should be a pathname to a socket in a 
subdirectory of /private/tmp/, whose use triggers the startup of the X 
display server and window manager (/Applications/MacPorts/X11.app.)

> How can I fix that?

Make sure you have the xinit port installed (you should, as the 
xorg-server port depends on it.) Also make sure you have logged out and 
back in after installing xorg-server (and its dependencies like xinit.)

Bill Cole
bill at scconsult.com or billcole at apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire

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