Comment 3 for bug 1169244

It appears the 3.8 kernel has an HKEY even 0x6040, but this does not exist on 3.9.

[ 50.453624] thinkpad_acpi: unknown possible thermal alarm or keyboard event received
[ 50.453628] thinkpad_acpi: unhandled HKEY event 0x6040
[ 50.453629] thinkpad_acpi: please report the conditions when this event happened to <email address hidden>
[ 50.453915] thinkpad_acpi: EC reports that Thermal Table has changed

This may be resolved by upstream commit: 6f62bc3

I'll build a Raring test kernel with that commit applied and post a link shortly.