This problem seems to be related to the JMC250 network controller. I've had various crashes and dmseg consistently reports the "network-state-changed" as the last line before everything goes dark.
I also found this topic with various possible workarounds. I'm testing them now: http://ubuntuforums.org/archive/index.php/t-1679008.html ** Also affects: pm-utils Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990129 Title: Suspend/Resume hangs and fails - Ubuntu 12.04LTS To manage notifications about this bug go to: https://bugs.launchpad.net/pm-utils/+bug/990129/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs