[bsdice]

I'm on Arch and a 4K display and had to hack the package 'xf86-input-libinput' to be able to adjust mouse scroll speed, towards faster. Upstream has been unwilling to implement it. I published the mod here: https://seitics.de/files/xf86-input-libinput/ should anyone stumble on this post via search engine. To change scroll speed from 1 1 to 2 2 use e.g.

xinput --set-prop "Kingsis Peripherals Evoluent VerticalMouse D" "libinput Scroll Distance Scale" 2 2

aside from

xinput --set-prop "Kingsis Peripherals Evoluent VerticalMouse D" "libinput Accel Speed" -1.0

for cursor speed which already worked. HTH

Edit: Patch by 3rd party, I fixed it up so would apply cleanly to most recent package.