[Wayland-bugs] [Bug 96690] libinput 1.3.2 freezing pointer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96690

--- Comment #5 from Peter Hutterer <peter.hutterer at who-t.net> ---
(In reply to brent s. from comment #1)
> Created attachment 124732 [details]
> event1's evemu record

The first event here may show the issue:

E: 0.000001 0001 0145 0000      # EV_KEY / BTN_TOOL_FINGER      0
E: 0.000001 0001 014d 0001      # EV_KEY / BTN_TOOL_DOUBLETAP   1

This indicates that from the kernel's POV the device switched from single
finger to two-fingers down. In libinput that usually stops pointer motion
(depending on finger position it may start 2fg scrolling). Was this recording
started with your fingers off the touchpad?

All other BTN_TOOL_FINGER events point at a potential hardware issue, whenever
the device switches to single-finger down (FINGER is 1) it immediately switches
to two fingers in the subsequent event (DOUBLETAP is 1). So we either have the
hw not noticing that one finger was released or in-kernel tracking getting
confused.

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