Bug#855465: taps intermittently missed on AlpsPS/2 ALPS GlidePoint touchpad

[Jyotirmoy Bhattacharya <jyotirmoy@jyotirmoy.net>]

Package: libinput10

Version: 1.6.0-1

On my AlpsPS/2 ALPS GlidePoint touchpad with tap-to-click enabled, taps sometimes register as clicks and sometimes don't.

On running

sudo libinput-debug-events --enable-tap --device /dev/input/event2

sometimes taps produce events like

event2   POINTER_BUTTON   +21.93s    BTN_LEFT (272) pressed, seat count: 1
event2   POINTER_BUTTON   +22.20s    BTN_LEFT (272) released, seat count: 0

but sometimes they produce nothing at all and there is no clear pattern of when a tap succeeds.

On the other hand with libinput built from the current git (6b561d45) things work as expected and

sudo ./event-debug --enable-tap --device /dev/input/event2

consistently generates events for taps.

Jyotirmoy Bhattacharya