Swap vertical and horizontal scroll axis

Question

Is there a way to swap the vertical and horizontal scroll axes, e.g., so that when scrolling right on the touchpad it scrolls down on screen?

Answer 1

Get your mouse name with:

xinput

Get your button mapping with:

xinput get-button-map "Mouse Name"

This will give something like this:

1 2 3 4 5 6 7 8 9 

Change the scroll axis mapping like this:

xinput set-button-map 'Mouse Name' 1 2 3 6 7 4 5 8 9

Notice how 4 and 5 buttons are exchanged with 6 and 7. They usually correspond to the scrolling axis buttons. You can use xev to check before and after.

Some applications, like chromium may need to be restarted to be aware of this changes.

Answer 2

For swapping vertical scroll axis you just have to enable the natural scrolling. You can find it under settings -> devices -> mouse and touchpad. In 17.04 this option inverted the horizontal scroll axis too, but if you have the 18.04 it does not seems to work at the moment.