[Wayland-bugs] [Bug 98839] Somehow conditionalize hysteresis (hardware black/whitelist, device property introspection, user-exposed setting, etc)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98839

--- Comment #64 from Peter Hutterer <peter.hutterer at who-t.net> ---
With your recording:

$ sudo ./build/libinput-debug-events --verbose
[...]
-event21  DEVICE_ADDED     SynPS/2 Synaptics TouchPad        seat0 default
group21 cap:pg  size 106x98mm tap(dl off) left scroll-nat scroll-2fg-edge
click-buttonareas-clickfinger dwt-on
event21 - hysteresis disabled
event21 - pressure: begin touch
event21 - thumb state: THUMB_STATE_MAYBE → THUMB_STATE_NO
event21 - button state: from BUTTON_STATE_NONE, event BUTTON_EVENT_IN_AREA to
BUTTON_STATE_AREA
 event21  POINTER_MOTION    +2.44s       -0.22/ -0.12
 event21  POINTER_MOTION    +2.45s       -0.38/  0.21
 event21  POINTER_MOTION    +2.49s       -0.45/ -0.25
 event21  POINTER_MOTION    +2.50s       -0.98/ -1.81
 event21  POINTER_MOTION    +2.51s       -1.07/ -2.36

So the hysteresis is disabled before the first motion event is sent, right
after putting the finger down.

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