I am opening this again, as it still occurs with the latest kernel. It seems to occur if and only if "Serial (ATA) mode" is set to "AHCI" in the bios. If I set it to "Compatibility," everything works fine, which is why I initially thought that this bug was fixed.
** Changed in: linux-source-2.6.17 (Ubuntu) Status: Fix Released => Unconfirmed -- Resuming from hibernate doesn't work on Thinkpad X60s https://launchpad.net/bugs/52115 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs