[Wayland-bugs] [Bug 106425] Touchpad jitter on Dell Latitude E7240 with 1.10.6

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106425

--- Comment #5 from Peter Hutterer <peter.hutterer at who-t.net> ---
Yeah, you wouldn't believe the exceptions we have in libinput for semi-mt
touchpads because they're all awful.

fwiw, you can grab libinput from git and hack around in the hysteresis code
yourself (tp_init_hysteresis()), i.e. change the ranges manually instead of
going through the fuzz property. Much faster because you can then run sudo
./builddir/libinput-debug-gui straight from the repo (no need to install) and
check if the jitter is still present. That cursor movement is controlled by
libinput directly (hitting esc quits).

If you find the right value(s), then you can push them to the property and
check again. It may even be that you need different values for x and y.

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