[X2Go-User] X2Go, Debian, Openbox - How run graphical clients as a simple user

[Ulrich Sibiller]

You are switching users without passing the display authorization
cookie. The easiest way to achieve this is probably using ssh: instead
of executing "su user_2" call "ssh -X user_2 at localhost".

The problem is access to the xauthority file of user_1 (the path is
stored in the XAUTHORITY environment, usually
/home/user_1/.Xauthority.). This file contains the cookie you need to
access the display. As user_2 you are not allowed to read that file
while as user root you can read it.

Uli

On Fri, Dec 27, 2019 at 3:45 PM Lmhelp1 <lmhelp1 at orange.fr> wrote:
>
> Hello,
>
> I am using X2Go under Debian with Openbox.
> I have upgraded to Debian Buster, I didn't use to experiment the problem
> below with Debian Stretch.
> My problem is about running graphical clients (like xeyes, xterm, gvim,
> etc.) from a console logged in either as a "simple" user ("user_2"
> below) or as "root".
> "user_2" cannot run these clients, "root" can.
> I would like both of them to be able to run these clients.
> Below, is what happens ("user_1" is the user that started the X2Go
> session, it is also a "simple" user).
>
> user_1> su user_2
> Password:
> No protocol specified
> xrdb: Resource temporarily unavailable
> xrdb: Can't open display ':50'
>
> user_2> exit
>
> user_1> su
> Password:
> root> xeyes
> <OK>
>
> Can you tell me how to allow "user_1" to run graphical clients like
> xeyes, xterm, gvim, etc.?
>
> Best regards,
> --
> Léa
>
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