[Wayland-bugs] [Bug 106365] False positives with wobble detection

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106365

            Bug ID: 106365
           Summary: False positives with wobble detection
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: ASSIGNED
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: peter.hutterer at who-t.net
                CC: Hi-Angel at yandex.ru, pointedstick at zoho.com

New bug for the wobble detection, hoping to short-cut Nate and Konstantin.
Since I don't have a wobbly touchpad anywhere near me, it's a bit frustrating
to try something only to have the other side tell me it doesn't work. So now
you both are in the same arena and can fight it out :)

So, current status is: 795657a0 (i.e. the original implementation) has false
positives. 30a398591ba2 (git master of today) has false negatives. We need to
find a middle ground.

Konstantin: reminder that git master auto-enables hysteresis when a fuzz is
set, so you always need to comment out this line in tp_init_hysteresis():
      tp->hysteresis.enabled = (ax->fuzz || ay->fuzz);


K mentioned in a private email that 9c3a597aa "touchpad: reset the wobble
detection for non-pointer events" is the culprit, please attach an evemu
recording of a wobbly sequence that didn't trigger this.

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