I've added the xenial enablement stack and will report back if the crash occurs.
Here's my updated kernel and Xorg version info: ➜ ~ Xorg -version X.Org X Server 1.18.3 Release Date: 2016-04-04 X Protocol Version 11, Revision 0 Build Operating System: Linux 3.13.0-91-generic x86_64 Ubuntu Current Operating System: Linux hyperion-stfs 4.4.0-31-generic #50~14.04.1-Ubuntu SMP Wed Jul 13 01:07:32 UTC 2016 x86_64 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=285091fd-ac1a-4801-8055-c356ab9083a5 ro quiet splash vt.handoff=7 Build Date: 03 July 2016 09:17:03AM xorg-server 2:1.18.3-1ubuntu2.2~trusty1 (For technical support please see http://www.ubuntu.com/support) Current version of pixman: 0.30.2 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. ➜ ~ uname -a Linux hyperion-stfs 4.4.0-31-generic #50~14.04.1-Ubuntu SMP Wed Jul 13 01:07:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1598904 Title: X server crashes sporadically with a segfault To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1598904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs