Control screen brightness in i3

I would like to control the screen brightness in **i3**, in Intel laptops that come with *Fn* keys for the purpose. These keys function with any other DE. First making sure devices available are Intel: $ ls -l /sys/class/backlight/ total 0 lrwxrwxrwx 1 root root 0 juin 24 18:26 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight [In another forum](https://faq.i3wm.org/question/3445/change-brightness-in-i3-macbook-pro/index.html) the programme xbacklight is suggested as means to control brightness in **i3**. However it fails in the laptops I tried so far: $ xbacklight -inc 10 No outputs have backlight property Is there any other way to control brightness in **i3**?