[Wayland-bugs] [Bug 105727] libinput-1.10.3: two-finger-scrolling snaps back when lifting fingers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105727

Peter Hutterer <peter.hutterer at who-t.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Peter Hutterer <peter.hutterer at who-t.net> ---
thanks for the cc, I don't automatically get CC'd. It keeps my inbox somewhat
sane :)

Judging by the event log, this *should* be a non-issue. The snapback is caused
by a ABS_Y movement just before the BTN_TOOL_DOUBLETAP change (see timestamps
0.677692 and 2.905686). In both cases, the ABS_PRESSURE value drops below the
threshold though, so the touch should end. On master, this is already the case
with commit: 

commit 3f5ff113a8c9469b084941b3b3157d7da95600d1
Author: Peter Hutterer <>
Date:   Wed Mar 21 10:24:12 2018 +1000

     touchpad: only keep low-pressure fingers alive for 2+-slot touchpads


These commits aren't on 1.10.x yet though, I'll try to get them over there for
the next release. Meanwhile, using master is the best workaround.

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