[Wayland-bugs] [Bug 96275] Acer Aspire 5749 - The cursor jumps when scrolling with two fingers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96275

            Bug ID: 96275
           Summary: Acer Aspire 5749 - The cursor jumps when scrolling
                    with two fingers
           Product: Wayland
           Version: 1.3.0
          Hardware: x86-64 (AMD64)
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: juanjo at benages.eu

Created attachment 124173
  --> https://bugs.freedesktop.org/attachment.cgi?id=124173&action=edit
evemu recording of the device

When using two finger scrolling the cursor jumps and the Xorg.0.log gets full
of errors like:
[  2367.177] (EE) libinput bug: invalid tap event, no fingers are down
[  2377.707] (EE) libinput bug: invalid tap event, no fingers are down
[  2482.789] (EE) libinput bug: invalid tap event when fingers are up
[  2483.981] (EE) libinput bug: invalid tap event, no fingers are down
[  2677.826] (EE) libinput bug: invalid tap event when fingers are up
[  2681.796] (EE) libinput bug: invalid tap event when fingers are up
[  2698.724] (EE) kernel bug: Touch jump detected and discarded.
See https://wayland.freedesktop.org/libinput/doc/1.3.0/touchpad_jumping_cursor
for details
[  2698.915] (EE) libinput bug: invalid tap event when fingers are up


When you file a bug, please attach the following information:
* a virtual description of your input device

* the libinput version. 
libinput-bin/testing,now 1.3.0-2 amd64 

* the current libinput settings for the device.
Device 'SynPS/2 Synaptics 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 (276): 1
        libinput Tapping Enabled Default (277): 0
        libinput Tapping Drag Enabled (278):    1
        libinput Tapping Drag Enabled Default (279):    1
        libinput Tapping Drag Lock Enabled (280):       0
        libinput Tapping Drag Lock Enabled Default (281):       0
        libinput Accel Speed (282):     -0.117647
        libinput Accel Speed Default (283):     0.000000
        libinput Natural Scrolling Enabled (284):       0
        libinput Natural Scrolling Enabled Default (285):       0
        libinput Send Events Modes Available (260):     1, 1
        libinput Send Events Mode Enabled (261):        0, 0
        libinput Send Events Mode Enabled Default (262):        0, 0
        libinput Left Handed Enabled (286):     0
        libinput Left Handed Enabled Default (287):     0
        libinput Scroll Methods Available (288):        1, 1, 0
        libinput Scroll Method Enabled (289):   1, 0, 0
        libinput Scroll Method Enabled Default (290):   1, 0, 0
        libinput Disable While Typing Enabled (291):    1
        libinput Disable While Typing Enabled Default (292):    1
        Device Node (263):      "/dev/input/event1"
        Device Product ID (264):        2, 7
        libinput Drag Lock Buttons (293):       <no items>
        libinput Horizonal Scroll Enabled (265):        1

*if the device is a touchpad or a pointing stick, the vendor model number of
your laptop, and the content of /sys/class/dmi/id/modalias.

My laptop is an Acer Aspire 5749
dmi:bvnINSYDE:bvrV1.05:bd07/28/2011:svnAcer:pnAspire5749:pvrV1.05:rvnAcer:rnHMA51_HR:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:


* if the device is a touchpad, the physical dimensions of your touchpad in mm
88x46 mm

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