It seems to me that problem is in nvidia/nouveau drivers. Switched to Intel card and no lockups so far.
"The problem is clearly upstream of Ubuntu as it affects a number of distros with that kernel/nVidia driver combo" - yep, seems so. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310762 Title: Ubuntu 14.04 random freeze and lock up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1310762/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs