I traced down the issue, and it's still in the current upstream git repositories. I have opened a bug at https://bugs.freedesktop.org/show_bug.cgi?id=24922.
** Bug watch added: freedesktop.org Bugzilla #24922 https://bugs.freedesktop.org/show_bug.cgi?id=24922 -- Xorg crashed with signal 7 in xf86Wakeup() https://bugs.launchpad.net/bugs/474549 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