Bernie, thanks. You are correct, XAuthLocation wasn't correctly set, and this was the cause of the problem.
I didn't set XAuthLocation at all, so ssh used the default value, which ssh_config(5) says is /usr/bin/X11/xauth. But in Ubuntu xauth is /usr/bin/xauth. Setting XAuthLocation /usr/bin/xauth in my ssh config solved the problem. Since xauth is /usr/bin/xauth and not /usr/bin/X11/xauth in Ubuntu, it seems that Ubuntu's openssh-client should change its default value of XAuthLocation. Debian solves this by making /usr/bin/X11 a symlink to . , but that seems like an overbroad solution for just this problem. Thanks, Andrew. -- X11 forwarding fails (Invalid MIT-MAGIC-COOKIE) https://bugs.launchpad.net/bugs/358612 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