[Wayland-bugs] [Bug 104828] Wobbly AlpsPS/2 ALPS DualPoint TouchPad

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104828

--- Comment #15 from Daniel van Vugt <daniel.van.vugt at canonical.com> ---
(In reply to Hi-Angel from comment #14)

> libinput does have a detection code — otherwise how could it "remove"
> wobbling.

I think that's wrong. It doesn't detect wobbling. It _assumes_ from the
beginning that the touchpad is wobbly and only turns off hysteresis later,
after deciding that it's not wobbling.

The wobble "removal" is the hysteresis algorithm, which is ON by default. The
bug here is that the stillness detection algorithm has gone wrong and turned
hysteresis OFF too early.

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