1. su
2. apt install xinput
3. xinput --list --short Find the ID number.
4. xinput --list-props "ID"
5. xinput --set-prop "ID" "libinput Accel Speed" 0.125 0.125 is a number for the acceleration that you want. You change this to whatever you want to use and the “libinput Accel Speed” part, might be different for you. You need to look in the list to find out what it is called for you, if it does not work.
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