[Wayland-bugs] [Bug 105043] 3-fingers touch occasionally fails to get detected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105043

            Bug ID: 105043
           Summary: 3-fingers touch occasionally fails to get detected
           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: Hi-Angel at yandex.ru

Recently I found libinput supports multi-finger gestures as an alternative to
touchpad buttons. Most of the times it's amazing, except when it doesn't work.

Sometimes touching the touchpad with 3 fingers ends up with no visible effect,
othertimes its effect is as if I touched with two fingers (e.g. a context menu
pops up).

The evemu-record is done with a few attempts to make the triple-button gesture
over a terminal. Some attempts resulted in no visible effect, whereas when this
detected as a two-fingers click, I had to make a single click to dismiss the
menu.

Note: the very last triple click in the record did succeed.

laptop: SAMSUNG NP305V5A
touchpad: x=103mm, y=53mm. (I'm traveling, measures are done with a checkered
notebook)
libinput version tested: 1.9.901.r0.g0ac4a148 (git)

        $ udevadm info /dev/input/event10                            
        P: /devices/platform/i8042/serio1/input/input8/event10
        N: input/event10
        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/event10
        E: DEVPATH=/devices/platform/i8042/serio1/input/input8/event10
        E: ID_BUS=i8042
        E: ID_INPUT=1
        E: ID_INPUT_HEIGHT_MM=48
        E: ID_INPUT_TOUCHPAD=1
        E: ID_INPUT_TOUCHPAD_INTEGRATION=internal
        E: ID_INPUT_WIDTH_MM=94
        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_JUMPING_SEMI_MT=1
        E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1
        E: MAJOR=13
        E: MINOR=74
        E: SUBSYSTEM=input
        E: USEC_INITIALIZED=19212
        $ cat /sys/class/dmi/id/modalias
       
dmi:bvnAmericanMegatrendsInc.:bvr07PW.ME06.20120112.SKK:bd01/12/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn305V4A/305V5A/3415VA:pvr07PW:rvnSAMSUNGELECTRONICSCO.,LTD.:rn305V4A/305V4A:rvr07PW:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:

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