In my HP Folio 13 laptop with Ubuntu 13.04 the brightness control works with the slider in the system Brightness & Lock settings, but the brightness function keys don't. Also, the brightness level is set to maximum on every boot.

Is there a way to make them work and make the system keep the brightness level set in the previous session?

Some information about my laptop concering this issue:

ls /sys/class/backlight

intel_backlight



ls /sys/class/backlight/*/brightness

/sys/class/backlight/intel_backlight/brightness



lspci | grep -i vga

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)



uname -a

Linux folio13 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:16:28 UTC 2013 x86_64 GNU/Linux