https://bugs.freedesktop.org/show_bug.cgi?id=93503

--- Comment #6 from Peter Hutterer <[email protected]> ---
I ran some analysis on attachment 120684 and it worries me a bit:
Touchpad dimensions: 101x56mm
Touchpad diagonal: 1393.22 (0.25 == 348.30)
Touchpad diagonal: 116.10mm (0.25 == 29.03mm)
48 deltas, average 0.12, max 0.12, total distance 5.66 in mm
... x: average 0.08mm, max 0.08mm, total distance 4.00mm
... y: average 0.08mm, max 0.08mm, total distance 4.00mm
Maximum recorded delta: 0.12mm
... x: 0.08mm
... y: 0.08mm

source:
https://github.com/whot/input-data-analysis/tree/master/touchpad-max-delta

So while you move just over 5mm in total, your average delta is 0.12mm which is
1 device unit in any direction. I'm very hesitant to disable the hysteresis for
a movement of that extent, because we're dealing with motions so small that
it's impossible to tell intentional movement from accidental movement or hw
sensor inefficiency.

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