[Wayland-bugs] [Bug 94986] ETPS/2 Elantech Touchpad imprecise pointer movement using libinput

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94986

            Bug ID: 94986
           Summary: ETPS/2 Elantech Touchpad imprecise pointer movement
                    using libinput
           Product: Wayland
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: jiteshsingh17 at gmail.com

I have Asus K55VM-SX086D laptop. The touchpad is ETPS/2 Elantech Touchpad.
Pointer movement was very fine when synaptics driver was in use. After
switching to libinput, I no more feel the same accuracy and control as it used
to be. I am not able to precisely point objects, I either overshoot or
undershoot them. I have already tried adjusting accel speed via xinput,
hysteresis patch, this patch:
https://bugzilla.redhat.com/show_bug.cgi?id=1316655, but no success. Following
are the details:

$ xinput --list-props 13
Device 'ETPS/2 Elantech Touchpad':
    Device Enabled (138):    1
    Coordinate Transformation Matrix (140):    1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
    libinput Tapping Enabled (274):    1
    libinput Tapping Enabled Default (275):    0
    libinput Tapping Drag Enabled (276):    1
    libinput Tapping Drag Enabled Default (277):    1
    libinput Tapping Drag Lock Enabled (278):    0
    libinput Tapping Drag Lock Enabled Default (279):    0
    libinput Accel Speed (280):    0.000000
    libinput Accel Speed Default (281):    0.000000
    libinput Natural Scrolling Enabled (282):    1
    libinput Natural Scrolling Enabled Default (283):    0
    libinput Send Events Modes Available (258):    1, 1
    libinput Send Events Mode Enabled (259):    0, 0
    libinput Send Events Mode Enabled Default (260):    0, 0
    libinput Left Handed Enabled (284):    0
    libinput Left Handed Enabled Default (285):    0
    libinput Scroll Methods Available (286):    1, 1, 0
    libinput Scroll Method Enabled (287):    1, 0, 0
    libinput Scroll Method Enabled Default (288):    1, 0, 0
    libinput Click Methods Available (289):    1, 1
    libinput Click Method Enabled (290):    1, 0
    libinput Click Method Enabled Default (291):    1, 0
    libinput Disable While Typing Enabled (292):    1
    libinput Disable While Typing Enabled Default (293):    1
    Device Node (261):    "/dev/input/event5"
    Device Product ID (262):    2, 14
    libinput Drag Lock Buttons (294):    <no items>
    libinput Horizonal Scroll Enabled (263):    1

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