Arch Linux Laptop (Lenovo Thinkpad X250) Monitor Brightness

for xfce4 fn+F5 and fn+F6 work fine but for i3 it didn’t work.

if trying to change backlight brightness by xbacklight -inc 10 then get error message

No outputs have backlight property

so added /etc/X11/xorg.conf

Section "Device"
    Identifier "Card0"
    Driver "intel"
    Option "Backlight" "intel_backlight"
EndSection

But it failed starting Xserver because system coudn’t load intel package. The system couldn’t load intel because it doesn’t have intel driver and using modesetting.

And according to arch wiki, xbacklight command will not work with modesetting.

Now I decided to replace xorg-xbacklight to acpilight.
acpilight is AUR package and its backward compatible xbacklight replacement.

Installed it from AUR and copy 90-backlight.rules to /etc/udev/rules.d/

Now xbacklight work fine!

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