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Bug#876198: libinput10: Can't initiate a touchpad motion near a corner



Package: libinput10
Version: 1.8.2-1
Severity: normal

When using GNOME on Wayland I can't move the pointer with the touchpad
if I initially start touching it near a corner. Even if I drag my finger
across the middle from the corner, the pointer doesn't move, and no
events are shown in libinput-debug-events. If I do the opposite, ie
start the motion near the middle of the touchpad, it continues to track
my finger correctly if I move it into the corners.

I only noticed this recently, so it's probably something in the most
recent version to enter Debian. GNOME on Xorg is not affected; AIUI
GNOME on Wayland uses libinput, and something else on Xorg, so I guessed
this is the culprit package.

The machine is a Lenovo Thinkpad Carbon X1 4th Generation. From
libinput-list-devices:

Device:           SynPS/2 Synaptics TouchPad
Kernel:           /dev/input/event1
Group:            8
Seat:             seat0, default
Size:             100x57mm
Capabilities:     pointer
Tap-to-click:     disabled
Tap-and-drag:     enabled
Tap drag lock:    disabled
Left-handed:      disabled
Nat.scrolling:    disabled
Middle emulation: disabled
Calibration:      n/a
Scroll methods:   *two-finger edge
Click methods:    *button-areas clickfinger
Disable-w-typing: enabled
Accel profiles:   none
Rotation:         n/a

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.12.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libinput10 depends on:
ii  libc6         2.24-17
ii  libevdev2     1.5.7+dfsg-1
ii  libinput-bin  1.8.2-1
ii  libmtdev1     1.1.5-1+b1
ii  libudev1      234-3
ii  libwacom2     0.24-1

libinput10 recommends no packages.

libinput10 suggests no packages.

-- no debconf information


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