This should be a newbie question, because this should be as easy as logging out. But it's not. I've had this question for years, and have never really found an answer.
How do I increase the mouse scrollspeed? The number of pixels, or lines, that are scrolled in one 'scrollevent'?
xdotool cannot spew out extra scroll events on scroll events to fake double or triple the speed. xinput does not provide options for setting scroll speed, only for mouse cursor speed.
In 2008 or something, I had temporary success when using 'VertScrollDelta' in xorg.conf, but that didn't work after I had a different mouse. But even if it did work, no one uses or wants to use xorg.conf anymore these days.