Comment # 5 on bug 907368 from Takashi Iwai

So the key isn't emitted through the normal PS2 unlike the recent HP machines.
Try other /dev/input/event* files on openSUSE 13.1 kernel.  One of them should
correspond to the input device from the ACPI video driver.

Also, please give the hwinfo outputs running on both openSUSE 13.1 and 13.2
kernels.  Attach the files to Bugzilla.