Here's the output of running dmesg. I attempted three different hibernates, none of the suceeded in turning off the computer. They appeared to hibernate but immediately restarted. Note, this was not a reboot, the bootstrap BIOS screen with the IBM logo never comes up.
** Attachment added: "dmesg output" http://librarian.launchpad.net/6853321/dmesg.output -- [Feisty] Inaudible audio upon resuming from suspend-to-disk https://launchpad.net/bugs/80893 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs