[Wayland-bugs] [Bug 104788] Touchpad hysteresis doesn't work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104788

            Bug ID: 104788
           Summary: Touchpad hysteresis doesn't work
           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

Created attachment 136960
  --> https://bugs.freedesktop.org/attachment.cgi?id=136960&action=edit
selecting a text

Today I learned libinput have "touchpad hysteresis" to prevent pointer
wobbling. Unfortunately I don't remember it ever working for me. Selecting a
text or clicking small icons is very hard because the pointer restlessly
wobbles.

The evemu-record is done for trying to select a text. I tried to focus a margin
between letters, then double-tapped to start selection, then moved the finger
to select a text span, then again tried to focus a margin between letters.

laptop: SAMSUNG NP305V5A
touchpad: x=103mm, y=53mm. (I'm traveling, measures are done with a checkered
notebook)
libinput versions tested: 1.9.1 (git), 1.9.901.r0.g0ac4a148 (git)

        $ udevadm info /dev/input/event11
        P: /devices/platform/i8042/serio1/input/input9/event11
        N: input/event11
        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/event11
        E: DEVPATH=/devices/platform/i8042/serio1/input/input9/event11
        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=75
        E: SUBSYSTEM=input
        E: USEC_INITIALIZED=19413965
        $ 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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