[Wayland-bugs] [Bug 103281] Dell XPS 13 (9343) wrong touchpad limits

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103281

            Bug ID: 103281
           Summary: Dell XPS 13 (9343) wrong touchpad limits
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: mattia.b89 at gmail.com

Created attachment 134847
  --> https://bugs.freedesktop.org/attachment.cgi?id=134847&action=edit
evemu

description:
there is a "death" trackpad area for the cursor movement. This issue happens
only when I _start_ a movement, that is I place my finger on the "death" area
and then I start moving it. This is not an issue if I continue the movement
over that area because there is no problem, it is recognized as active and the
cursor keeps on its movement.


further info:

libinput list-devices --version
1.8.3

xinput list-props "DLL0665:01 06CB:76AD Touchpad"
Device 'DLL0665:01 06CB:76AD Touchpad':
        Device Enabled (141):   1
        Coordinate Transformation Matrix (143): 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 Tapping Button Mapping Enabled (282):  1, 0
        libinput Tapping Button Mapping Default (283):  1, 0
        libinput Natural Scrolling Enabled (284):       0
        libinput Natural Scrolling Enabled Default (285):       0
        libinput Left Handed Enabled (286):     0
        libinput Left Handed Enabled Default (287):     0
        libinput Accel Speed (288):     0.676471
        libinput Accel Speed Default (289):     0.000000
        libinput Scroll Methods Available (290):        1, 1, 0
        libinput Scroll Method Enabled (291):   1, 0, 0
        libinput Scroll Method Enabled Default (292):   1, 0, 0
        libinput Click Methods Available (293): 1, 1
        libinput Click Method Enabled (294):    1, 0
        libinput Click Method Enabled Default (295):    1, 0
        libinput Middle Emulation Enabled (296):        0
        libinput Middle Emulation Enabled Default (297):        0
        libinput Send Events Modes Available (261):     1, 1
        libinput Send Events Mode Enabled (262):        0, 0
        libinput Send Events Mode Enabled Default (263):        0, 0
        libinput Disable While Typing Enabled (298):    1
        libinput Disable While Typing Enabled Default (299):    1
        Device Node (264):      "/dev/input/event10"
        Device Product ID (265):        1739, 30381
        libinput Drag Lock Buttons (300):       <no items>
        libinput Horizontal Scroll Enabled (301):       1

evemu, attached. I have recorded a one-finger horizontal motion: I put the
finger outside the trackpad, on the left and at the middle of its height. I
have started a horizontal motion to the right, covering the piece of case, then
I entered in the trackpad area(*) up to the center of it. Finally I came back
up to the original starting point. What was the goal of this movement: show you
that for the outward path, there is a "death" area: cursor starts its movement
one centimeter after my finger entered the trackpad area; while in the return
path the cursor keeps on going until my finger goes out of the trackpad area.

udevadm info /sys/class/input/event10 
P:
/devices/pci0000:00/INT3433:00/i2c-1/i2c-DLL0665:01/0018:06CB:76AD.0001/input/input13/event10
N: input/event10
S: input/by-path/platform-INT3433:00-event-mouse
E: DEVLINKS=/dev/input/by-path/platform-INT3433:00-event-mouse
E: DEVNAME=/dev/input/event10
E:
DEVPATH=/devices/pci0000:00/INT3433:00/i2c-1/i2c-DLL0665:01/0018:06CB:76AD.0001/input/input13/event10
E: ID_INPUT=1
E: ID_INPUT_HEIGHT_MM=56
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_WIDTH_MM=101
E: ID_PATH=platform-INT3433:00
E: ID_PATH_TAG=platform-INT3433_00
E: ID_SERIAL=noserial
E: LIBINPUT_DEVICE_GROUP=18/6cb/76ad/100:i2c-DLL0665:01
E: LIBINPUT_MODEL_TOUCHPAD_VISIBLE_MARKER=1
E: MAJOR=13
E: MINOR=74
E: SUBSYSTEM=input
E: USEC_INITIALIZED=3009153

hardware: Dell XPS 13 (9343)

cat /sys/class/dmi/id/modalias
dmi:bvnDellInc.:bvrA13:bd06/16/2017:svnDellInc.:pnXPS139343:pvr:rvnDellInc.:rn0TM99H:rvrA00:cvnDellInc.:ct9:cvr:

physical dimensions of the touchpad, taken from official Dell manual:
height, 60 mm
width, 105 mm
and its resolution:
horizontal, 305 dpi
vertical, 305 dpi

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