[Wayland-bugs] [Bug 106759] ThinkPad T560: three-finger gestures stop working sometimes after using four-finger gesture

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106759

            Bug ID: 106759
           Summary: ThinkPad T560: three-finger gestures stop working
                    sometimes after using four-finger gesture
           Product: Wayland
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: freedesktop-bugzilla at pp3345.net

Created attachment 139891
  --> https://bugs.freedesktop.org/attachment.cgi?id=139891&action=edit
evemu-record showing a four-finger gesture and a broken three-finger gesture
afterwards

On my ThinkPad T560, three-finger and four-finger gestures generally work fine,
however, about 50% of the time a three-finger gesture is detected as a
two-finger scroll after a four-finger gesture was used before - this is usually
fixed by doing another four-finger gesture.

I believe that this might be a kernel bug given the output of evemu-record, but
I thought I'd report it here first.

 % udevadm info /sys/class/input/event5
P: /devices/platform/i8042/serio1/input/input5/event5
N: input/event5
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/event5
E: DEVPATH=/devices/platform/i8042/serio1/input/input5/event5
E: ID_BUS=i8042
E: ID_INPUT=1
E: ID_INPUT_HEIGHT_MM=53
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_TOUCHPAD_INTEGRATION=internal
E: ID_INPUT_WIDTH_MM=98
E: ID_PATH=platform-i8042-serio-1
E: ID_PATH_TAG=platform-i8042-serio-1
E: ID_SERIAL=noserial
E: LIBINPUT_ATTR_PALM_PRESSURE_THRESHOLD=150
E: LIBINPUT_DEVICE_GROUP=11/2/7:isa0060/serio1
E: LIBINPUT_MODEL_LENOVO_T450_TOUCHPAD=1
E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1
E: MAJOR=13
E: MINOR=69
E: SUBSYSTEM=input
E: USEC_INITIALIZED=12977243

 % cat /sys/class/dmi/id/modalias
dmi:bvnLENOVO:bvrN1KET37W(1.24):bd02/26/2018:svnLENOVO:pn20FH002RGE:pvrThinkPadT560:rvnLENOVO:rn20FH002RGE:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone:

 % rpminfo libinput
libinput-1.10.7-1.fc28.x86_64

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