I installed Ubuntu 16.04 on an ASUS Z450LA laptop, that has Intel HD5500 integrated graphics.
The brightness up/down keys (Fn+F5/F6) don't work; however, if I use my desktop environment to control the brightness, it works, however is annoying to not have the easy way to control brightness.
When I use xev
, it shows that these keys are not generating events; it's as if the system doesn't detect them at all.
What to do?
The content of /sys/class/backlight
:
/sys/class/backlight$ ls
intel_backlight
and within the intel_backlight
directory, has:
actual_brightness
bl_power
brightness
device -> ../../card0-eDP-1
max_brightness
power
subsystem -> ../../../../../../../class/backlight
type
uevent
Best Answer
I don't know why the keys aren't working but, I have something useful to share.
As mentioned, you are using Ubuntu 16.04 and so this will work definitely for you.
Brightness-Controller