Got something similar in Lucid. "error: Failed to allocate internet-domain X11 display socket" on the server (while in debug mode).
further debug showed: ... debug2: bind port 6679: Cannot assign requested address debug2: bind port 6680: Cannot assign requested address debug2: bind port 6681: Cannot assign requested address ... It had to do with IPv6. I just had to add -4 to SSHD_OPTS in /etc/default/ssh (on the server) and restart sshd, it's all fine now. -- no longer honors X11 forwarding https://bugs.launchpad.net/bugs/136947 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs