As I found it out the hard way, xinput is pretty bare and does not support the settings required to make the touchpad usable on an XPS 9343, for example. The se

As I found it out the hard way, xinput is pretty bare and does not support the settings required to make the touchpad usable on an XPS 9343, for example. The settings for minimum and maximum acceleration are missing (and so these options are greyed out on the KDE GUI). They are defaulted to MIN and MAX respectively. Solution: install Synaptics, open KDE panel, set both acceleration settings to a low value, enjoy.