Comment 45 for bug 1218547

I burned a disk with the daily live of 2013-12-03 and the bug persists exactly the same. Fn keys change the value of /sys/class/backlight/acpi_video0/brightness. This doesn't change actual screen brightness, that can be changed altering the value of /sys/class/backlight/intel_backlight/brightness.

I will check the latest upstream kernel soon.