Hi again,
I've be able to resolve this issue. The problem was in the SSH server
config file. The only options referred to X2Go were "X11Forwarding yes"
and "X11DisplayOffset 10" but there were a couple of options missed:
"AllowTcpForwarding yes" and "X11UseLocalHost yes".
Now with last four options set I'm able to connect to assist to another
user in the remote machine.
Thanks for all.Regards.
----
El jue, 29-06-2017 a las 17:33 +0200, Víctor J. Sánchez escribió:
> Hi all,
> I'm trying to connect to an existing user session (local desktop
> mode) to help him in a remote host using x2godesktopsharing
> feature
> but I always get the next error (the first is in spanish):
>
>
>
>
> p, li { white-space: pre-wrap; }
>
> Error en la conexión No protocol specified xwininfo: error:
> unable to open display ":0" No protocol specified xwininfo: error:
> unable to open display ":0"
>
>
>
> The scenario is:
>
>
> - Remote host: Linux Mint 18.1 x64, Plasma 5 session,
> nopasswordlogin user and unprivileged (user A) logged in, X2Go
> Desktop Sharing running and enabled, administrator (sudoer) user B
> included in group x2godesktopsharing
>
>
> x2goversion:
> x2goagent: 3.5.0.32
> x2godesktopsharing: 3.1.1.3
> x2goserver: 4.0.1.20
> x2goserver-printing: 4.0.1.20
> x2goserver-xsession: 4.0.1.20
>
>
> - Local host: Fedora 25 Workstation x64, Plasma 5 session
>
>
> x2goversion:
> cups-x2go: 3.0.1.3
> x2goagent: 3.5.0.32
> x2goserver: 4.0.1.20
> x2goserver-extensions: 4.0.1.20
> x2goserver-fmbindings: 4.0.1.20
> x2goserver-printing: 4.0.1.20
> x2goserver-xsession: 4.0.1.20
> Client X2Go v. 4.1.0.0 (Qt - 4.8.7)
>
>
> I also tested on a local host with Windows 10 X2Go client and the
> error is the same. However other connection types (terminal or
> published applications) work fine. I've also tried with another
> remote sessions: XFCE, Cinnamon, ... the same result.
>
>
> Also I've observed that if the remote user A executes in a
> terminal window the "xhost +" command, when the user B connects to
> remote host with local desktop mode a window to choose a desktop is
> presented but only appears "non-existent" user B sessions (user B,
> screen :0) instead of user A session.
>
>
> What's wrong here?
>
>
> Thanks for your support.
> Regards.
>
>
>
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