Comment 29 for bug 1173961

Ok, now there was a change. In *acer-wmi*, I put:
> root@Dayman:/home/maxo# cd /sys/class/backlight/
> root@Dayman:/sys/class/backlight# cd /sys/class/backlight/acer-wmi
> root@Dayman:/sys/class/backlight/acer-wmi# cat max_brightness
> 15
> root@Dayman:/sys/class/backlight/acer-wmi# 10
> 10: command not found
> root@Dayman:/sys/class/backlight/acer-wmi# echo 5 > brightness
> root@Dayman:/sys/class/backlight/acer-wmi# echo 7 > brightness
and there was no change at all.

But when I went to *intel_backlight*, I got:
> root@Dayman:/sys/class/backlight/acer-wmi# cd
> /sys/class/backlight/intel_backlight
> root@Dayman:/sys/class/backlight/intel_backlight# cat max_brightness
> 976
> root@Dayman:/sys/class/backlight/intel_backlight# echo 5 > brightness
> root@Dayman:/sys/class/backlight/intel_backlight# echo 7 > brightness
> root@Dayman:/sys/class/backlight/intel_backlight#
and when I put echo 5 > brightness, the screen went super low, the same
with echo 7. I tried changing the brightness using the FN keys and it
went at full brightness and once again I can't lower the brightness to
about half. Same problems as before but *intel_backlight* is the one
that actually changed brightness.