This is looking more and more like broken ACPI BIOS. Instead of looking for the hash match in dmesg, you should also check:
cat /sys/power/pm_trace_dev_match This will find matches for drivers loaded as dynamic modules. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/760842 Title: Natty Narwhal/Sandy Bridge Suspend Fails -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs