I had the same problem in 12.04. I was able to resolve it by removing xfs from the font path in xorg.conf.
# FontPath "unix/:7100" FontPath "/usr/share/fonts/X11/misc" FontPath "/usr/share/fonts/X11/Type1" This may be related to bug #738526. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/930350 Title: xorg.conf plus emacs causes abrupt logout via Xorg SEGV To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/930350/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs