https://bugs.freedesktop.org/show_bug.cgi?id=93401

            Bug ID: 93401
           Summary: Make disabling touchpad movement possible as an option
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: medium
         Component: libinput
          Assignee: [email protected]
          Reporter: [email protected]

Make it possible to disable the movement of the Touchpad while keeping buttons
working. This feature is especially important for people who want to use the
Trackpoint of their Thinkpad X240, T440, W540 etc. These devices lack physical
Trackpoint buttons, thus require an enabled Touchpad. Disabling only the
movement would avoid unwanted cursor movement when clicking or accidentally
touching the Touchpad.

With the synaptics driver a simple synclient touchpadoff=1 used to be enough.

I’ve done a quick&dirty “fix” in libinput for myself by uncommenting line 920
in evdev-mt-touchpad.c:

        tp_thumb_detect(tp, t, time);
        tp_palm_detect(tp, t, time);

        //tp_motion_hysteresis(tp, t);
        //tp_motion_history_push(t);

        tp_unpin_finger(tp, t);

Unfortunately I lack knowledge to implement this as an exposed option.

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