[Wayland-bugs] [Bug 106044] Unreliable tap-to-click on a DELL XPS 9370

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106044

            Bug ID: 106044
           Summary: Unreliable tap-to-click on a DELL XPS 9370
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: gondsman at techgeek.co.in

Created attachment 138836
  --> https://bugs.freedesktop.org/attachment.cgi?id=138836&action=edit
evemu recording of a missed tap

I have a pretty new DELL XPS13 9370 laptop and using tap-to-click my touchpad
is missing clicks every now and then (like, 1 every 5 or 6). It happens a lot
more often with 2-finger or 3-finger tapping. I suspect this is due to the
touchpad recognizing my finger moving during the tap, but it happens way too
often to be normal (it NEVER happens on Windows with the same hardware and I
think I use my touchpad in the same way regardless of the operating system).
Attached is a evemu recording of a missed tap.
Other than this I'm happy to report that the touchpad works pretty well
(scrolling, palm rejection, accuracy...).

Other info:
libinput version 1.10.4 on Manjaro linux

udev info:
P:
/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-1/i2c-DELL07E6:00/0018:06CB:76AF.0002/input/input19/event10
N: input/event10
S: input/by-path/pci-0000:00:15.1-platform-i2c_designware.1-event-mouse
E:
DEVLINKS=/dev/input/by-path/pci-0000:00:15.1-platform-i2c_designware.1-event-mouse
E: DEVNAME=/dev/input/event10
E:
DEVPATH=/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-1/i2c-DELL07E6:00/0018:06CB:76AF.0002/input/input19/event10
E: EVDEV_ABS_00=0:1216:12
E: EVDEV_ABS_01=0:680:11
E: EVDEV_ABS_35=0:1216:12
E: EVDEV_ABS_36=0:680:11
E: ID_INPUT=1
E: ID_INPUT_HEIGHT_MM=56
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_WIDTH_MM=101
E: ID_PATH=pci-0000:00:15.1-platform-i2c_designware.1
E: ID_PATH_TAG=pci-0000_00_15_1-platform-i2c_designware_1
E: ID_SERIAL=noserial
E: LIBINPUT_DEVICE_GROUP=18/6cb/76af:i2c-DELL07E6:00
E: LIBINPUT_MODEL_TOUCHPAD_VISIBLE_MARKER=1
E: MAJOR=13
E: MINOR=74
E: SUBSYSTEM=input
E: USEC_INITIALIZED=2620793

modalias:
dmi:bvnDellInc.:bvr1.2.0:bd01/25/2018:svnDellInc.:pnXPS139370:pvr:rvnDellInc.:rn0F6P3V:rvrA00:cvnDellInc.:ct9:cvr:

touchpad-edge-detector:
Touchpad size as listed by the kernel: 101x61mm
User-specified touchpad size: 105x60mm
Calculated ranges: 1216/680

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