x2godesktopsharing Connection error No protocol specified xwininfo: error: unable to open display ":0"
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):
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.
Hi all again,
any clue with this issue? If it doesn't work I saddly have to work with other desktop sharing solutions like VNC.
Thanks for all. Regards.
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 x2godesktopsharingfeature 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: 3.5.0.32x2godesktopsharing: 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: 3.0.1.3x2goagent: 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 theerror 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 aterminal 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.
-
Víctor J. Sánchez