Enable X11 forwarding

The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Uncomment X11Forwarding no in the file /etc/ssh/sshd_config and change it to X11Forwarding yes.

Run /etc/init.d/sshd restart so the option change takes effect (or reboot). You will need to log out any ssh sessions and restart them, even if you specified -X already.