Discussing this with RAOF and cnd, this may be a symptom of a pervasive memory corruption bug in the input stack (see LP: #929408), which is fixed (we believe) in xorg-server 1.11.4-0ubuntu5 which will be uploaded today or tomorrow.
Please update to this version of the server and see if you can reproduce the crash. If you do reproduce it, and if apport prompts you to file another bug report, please do and mention the new bug # on this bug. If you don't see it, just leave this bug report in state Incomplete, and we'll close it out in a month or two. ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/946008 Title: Xorg crashed with SIGABRT in __libc_message() from xi2mask_free To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/946008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs