I've discovered the problem, which was caused by the swap UUID being changed by the installation process (see bug 336992).
For anyone else with the same problem, the fix is described here: http://ubuntuforums.org/showthread.php?t=456992 ** Changed in: linux (Ubuntu) Status: New => Invalid -- hibernate/resume problem - does not resume at all https://bugs.launchpad.net/bugs/335382 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs