ok, thanks to colin and apw, we localized this to actually being due to powernap taking the cpus offline. with powernap-common purged, the problem is fixed.
** Package changed: linux (Ubuntu) => powernap (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/830355 Title: x201 intermittent crash on resume from suspend, with caps lock flashing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/powernap/+bug/830355/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs