Its looking like it might have been a one time thing. It did occur right after an update (but not a kernel update). I've rebooted twice since and have had no re-occurrence. I'm attaching my update history in case that might shed some light on it.
** Attachment added: "update history" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435411/+attachment/4353652/+files/history.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1435411 Title: NMI watchdog: BUG: soft lockup - CPU#6 stuck for 23s! [Xorg:1028] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435411/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
