[Bug 266647] libinput/xf86-input-libinput psm0 middle-button press delayed until release

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From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 27 Sep 2022 07:57:54 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266647

            Bug ID: 266647
           Summary: libinput/xf86-input-libinput psm0 middle-button press
                    delayed until release
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs@FreeBSD.org
          Reporter: phk@FreeBSD.org

Lenovo T14s running -current.

When using xf86-input-libinput, the psm0 middle-button "press" event is delayed
until the button is released.

The timestamps when running "libinput debug-events" reflects the duration of
the press correctly:

   -event0   DEVICE_ADDED            System mouse                      seat0
default group1  cap:p left scroll-nat scroll-button
   -event1   DEVICE_ADDED            System keyboard multiplexer       seat0
default group2  cap:k
   -event2   DEVICE_ADDED            Sleep Button                      seat0
default group3  cap:k
   -event3   DEVICE_ADDED            Control Method Lid Switch         seat0
default group4  cap:S
   -event4   DEVICE_ADDED            AT keyboard                       seat0
default group5  cap:k
   -event5   DEVICE_ADDED            Generic PS/2 mouse                seat0
default group6  cap:p left scroll-nat scroll-button
   -event6   DEVICE_ADDED            ELAN0676:00 04F3:3195 Mouse       seat0
default group7  cap:p left scroll-nat scroll-button
   -event7   DEVICE_ADDED            ELAN0676:00 04F3:3195 TouchPad    seat0
default group8  cap:pg  size 114x58mm tap(dl off) left scroll-nat
scroll-2fg-edge click-buttonarea
   (motion events elided)
   -event5   POINTER_BUTTON          +3.292s       BTN_MIDDLE (274) pressed,
seat count: 1
    event5   POINTER_BUTTON          +4.873s       BTN_MIDDLE (274) released,
seat count: 0
    event5   POINTER_BUTTON          +7.031s       BTN_MIDDLE (274) pressed,
seat count: 1
    event5   POINTER_BUTTON          +9.179s       BTN_MIDDLE (274) released,
seat count: 0
    event5   POINTER_BUTTON          +10.750s      BTN_MIDDLE (274) pressed,
seat count: 1
    event5   POINTER_BUTTON          +10.807s      BTN_MIDDLE (274) released,
seat count: 0

When using xf86-input-evdev, the middle button works correctly.

Relevant port versions:

libinput-1.19.4_1              Generic input library
xf86-input-libinput-1.2.0_1    X.Org libinput input driver
xf86-input-evdev-2.10.6_7      X.Org event device input driver

Kernel: 14.0-CURRENT #4 main-n258201-45ff071ddcc-dirty: Mon Sep 26 06:16:19 UTC
2022

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