On 09/03/2016 02:34 AM, Patrick Dupre wrote:
How can I manage the brightness of my laptop ?
xbacklight -get (or -set)
does not work.
A gui interface would be helpful.
There should be backlight adjustment keys on your keyboard. If those
don't work, then file a kernel bug. In Gnome, if you open the menu in
the top-right corner, there should be a brightness slider under the
volume slider. Again, if that doesn't work, it's most likely a kernel bug.
If you open a terminal and look in /sys/class/backlight, each directory
there represents a kernel backlight control interface. Inside, you can
write a number to "brightness" in the range 0 to "max_brightness" and
it
should change. Be careful writing something very low because you might
not be able to see to turn it back up.