[arch-general] xbacklight, gnome brightness slider don't work, but changing rightness within /sys will

[Alexander Terry]

interesting by product: gdm can't turn off the screen when locked. I
consider this a good thing.

On Thu, Oct 22, 2015 at 8:17 PM Alexander Terry <alexterry43 at gmail.com>
wrote:

> as per subject, whenever i try to change my brightness with xbacklight
> -set, it doesnt work. it does not change the brightness. the same thing
> happenes in gnome, with the brightness slider on the top right menu.
>
> what does work is (as root) going into
> /sys/class/backlight/intel_backlight, and changing the value in the
> brightness folder. there are no other folders in /sys/class/backlight.
>