[Wayland-bugs] [Bug 106624] click-drag and 2 finger scroll does not work on Thinkpad T440

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106624

            Bug ID: 106624
           Summary: click-drag and 2 finger scroll does not work on
                    Thinkpad T440
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: zdzichu at irc.pl

Created attachment 139689
  --> https://bugs.freedesktop.org/attachment.cgi?id=139689&action=edit
recording when clicking+dragging

libinput-1.10.7-1.fc28.x86_64; it's Fedora 28

I'm using Gnome with following settings:
- touchpad ON
- natural scrolling ON
- tap to click ON
- two finger scroll ON
- edge scroll ON

The hardware is Lenovo Thinkpad T440 with button-less touchpad (this was the
one year Lenovo fscked up and virtualized trackpoint buttons; they reverted
this change next year). The touchpad has markings for three virtual buttons at
the top. The touchpad moves down (towards inside of the computer; don't know
how to describe it precisely) during clicking.

THE PROBLEM:
1) click-and-drag doesn't work. When I push down, the click is registered. But
when I keep the finger down and start moving the finger over touchpad, the
mouse cursor doesn't move.
2) Two finger scrolling doesn't work at all.

Hopefully there's a trackpoint, so I can work around the problem using
trackpoint + virtual left button and trackpoint + virtual middle button (for
scrolling)




P: /devices/platform/i8042/serio1/input/input10/event16
N: input/event16
S: input/by-path/platform-i8042-serio-1-event-mouse
E: DEVLINKS=/dev/input/by-path/platform-i8042-serio-1-event-mouse
E: DEVNAME=/dev/input/event16
E: DEVPATH=/devices/platform/i8042/serio1/input/input10/event16
E: EVDEV_ABS_00=::41
E: EVDEV_ABS_01=::37
E: EVDEV_ABS_35=::41
E: EVDEV_ABS_36=::37
E: ID_BUS=i8042
E: ID_INPUT=1
E: ID_INPUT_HEIGHT_MM=66
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_TOUCHPAD_INTEGRATION=internal
E: ID_INPUT_WIDTH_MM=97
E: ID_PATH=platform-i8042-serio-1
E: ID_PATH_TAG=platform-i8042-serio-1
E: ID_SERIAL=noserial
E: LIBINPUT_DEVICE_GROUP=11/2/7:isa0060/serio1
E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1
E: MAJOR=13
E: MINOR=80
E: SUBSYSTEM=input
E: USEC_INITIALIZED=23392770


libinput measure trackpoint-range produces no output (apart from initial
banner)

There's no 'sensitivity' file anywhere in /sys/class/input

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