Touchpad two finger scroll too fast. Synaptics not working

I am currently running Ubuntu 20.04 LTS on Lenovo Ideapad L340. The touchpad two-finger scrolling is too fast.

Tried Solutions like: xinput --set-prop <id> 'Synaptics Scrolling Distance' 8 8

but getting the error: property 'Synaptics Scrolling Distance' doesn't exist, you need to specify its type and format

Can anyone tell some easier way to do that. Graphical Interface would be helpful. I don't know I installed too many unwanted packages reffering to many answers but it did not helped.

EDIT: My Ubuntu Version:

Distributor ID: Ubuntu
Description: Ubuntu 20.04.3 LTS
Release: 20.04
Codename: focal

1 Answer

I have IdeaPad and this problem too. Try to start Ubuntu with XORG (on loading screen tap to right down corner) then (what is in parentheses does not need to be written to the terminal)

xinput (then find your touchpad)
xinput list-props id (id is touchpad)

then set up Scrolling Distance