I freshly installed Lubuntu 18.10 with LXQT environment and here's my issue : I want to dim the backlight of my laptop with the keyboard shortcut (XF86) but when i press it, it changes the brightness(which seems to be a software change because it messes with gamma and contrast)
So i went to the keyboard shortcuts bindings to find the menu that changes what i want :
^ the slider controls backlight (usual brightness) and the knob messes with contrast..
Here is the shortcut config menu :
However, there is no way i can find to inc or dec the slider instead of the knob, to have control over backlight. xbacklight and xrandr doesn't work as they output "no output with backlight property" but i can change backlight with
echo 700 | sudo tee /sys/class/backlight/intel_backlignt/brightness
which sets backlight to 700, but i don't know how to implement inc or dec on a shortcut with this :c
Teach me some unix please :)