[Wayland-bugs] [Bug 105108] Lenovo Yoga 11S touchpad is jittery

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105108

            Bug ID: 105108
           Summary: Lenovo Yoga 11S touchpad is jittery
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: daniel.van.vugt at canonical.com

Created attachment 137371
  --> https://bugs.freedesktop.org/attachment.cgi?id=137371&action=edit
yoga11s_one_finger_still.txt (evemu recording)

Lenovo Yoga 11S touchpad is jittery. The cursor moves a little even when I try
to keep my finger still.

This is noticeable after hysteresis has turned off, but libinput hysteresis was
definitely not helping since it made the touchpad unusably numb and
unresponsive. So the jitter problem I'm talking about here in libinput 1.10 is
much better than how it was previously :)

The same jitter happens with the synaptics driver if I turn off hysteresis
there. Although synaptics with hysteresis provides a nice experience... seems
to be a dramatically lower hysteresis threshold.

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