I've straced the ldm process while login (snipped attached). I've found that process 4092 (I suppose it's ssh) execs xauth which fails with this message "unable to generate an authority file name".
** Attachment added: "ldm.strace.snip" http://launchpadlibrarian.net/10309462/ldm.strace.snip -- Local devices don't work because an X11 authentication problem https://bugs.launchpad.net/bugs/160420 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs