[Wayland-bugs] [Bug 104788] Touchpad hysteresis doesn't work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104788

--- Comment #3 from Hi-Angel <Hi-Angel at yandex.ru> ---
(In reply to Peter Hutterer from comment #2)
> libinput looks at the touchpad motion and if the finger is down for some
> time without motion events (i.e. without wobbles) the motion hysteresis is
> disabled. See bug 98839.
> 
> This would explain why it works after login and then starts wobbling later -
> likely after the hysteresis was disabled. Once disabled, it stays disabled
> until you log out/restart.
> 
> You can easily verify this with sudo libinput debug-events --verbose, pipe
> it into a file and check for a hysteresis disabled message once it starts
> wobbling.
> 
> To debug this further though I'll need an evemu record that triggers this
> because the one you attached doesn't seem to disable the hysteresis.

Thanks for your response. Any way to enable motion hysteresis in running
system? I'm asking because it's a bit problematic to catch the moment it's is
still working. For example when I installed latest git version for testing, I
restarted sddm, and upon logging into system hysteresis have already been
disabled. That's the reason I was surprised when the next day after reboot it
was working for some time.

But if there's no way, of course I'll try to catch the moment manually.

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