Change touchpad scroll direction per device - 20.04 LTS

jake

3/10/24, 12:25 AM

My peripheral setup contains two physical mice, a touchpad built into my laptop, and two touchpads on wireless media keyboards. I'd like reverse scroll direction on all of my touchpads.

I tried Settings-> Mouse & Touchpad -> Touchpad -> Natural Scrolling. It worked for my laptop's built-in touchpad, but the wireless keyboard touchpads were not affected by the Touchpad setting, but rather by the Mouse setting, so I guess they are being detected as mice. I don't want to reverse the scroll direction in my actual mice.

Ultimately, I want a way to adjust the scroll direction per device rather than per device type. Is there a way to accomplish this?

123

1 + 0

mouse

touchpad

20.04

Score:0

Ubuntu

jake

3/11/24, 9:56 PM

I've figured out a way to do this (along with some other useful stuff) using some xinput commands in a startup script

#!/bin/bash

# disable all acceleration
xset m 00

# set sensitivities
G305_sens=0.2
Aerox3_sens=1.0

xinput --set-prop "pointer:Logitech G305" "Coordinate Transformation Matrix" $G305_sens 0 0 0 $G305_sens 0 0 0 1
xinput --set-prop "pointer:SteelSeries SteelSeries Aerox 3" "Coordinate Transformation Matrix" $Aerox3_sens 0 0 0 $Aerox3_sens 0 0 0 1


# set touchpad reverse scrolling 
# (ASUS touchpad gets set using ubuntu touchpad settings)
xinput --set-prop "pointer:Logitech K830" "libinput Natural Scrolling Enabled" 1
xinput --set-prop "pointer:Logitech K400 Plus" "libinput Natural Scrolling Enabled" 1

for anyone else looking to accomplish this, use...

xinput --list --short

...to find your pointer device name. Then use...

xinput --list-props YOUR_DEVICE_NAME

... to find the prop for Natural Scrolling because I don't know if it will always be exactly the same as mine.

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