[Wayland-bugs] [Bug 91475] Gestures vs scrolling on semi-mt touchpads

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91475

--- Comment #3 from Hans de Goede <jwrdegoede at fedoraproject.org> ---
Hi,

I discussed this a bit with Peter, the 4mm threshold is based on experience
with alps touchpads, and we may need to deal with elantech semi-mt touchpads
like yours differently.

We've come to the conclusion that we need to do one of 2 things for your
touchpad depending on how accurate your touchpad is:

1) If it is accurate enough then we can lower the threshold for gesture
detection to 2 mm which should solve your problem
2) If it is not accurate enough then we may end up simply disabling gestures on
semi-mt elantech touchpads such as yours

Can you please install evemu, and run evemu-record on your touchpad and then
create 2 recordings:

1) A (slow) vertical 2fg scroll gesture
2) A (slow) zoom-in pinch gesture

To do this first run sudo evemu-record without any cmdline options to see which
device is your touchpad, then press control+c, then do:

sudo evemu-record /dev/input/event# > 2fg-scroll.log
-do scroll gesture, press ctrl+c
sudo evemu-record /dev/input/event# > pinch.log
-do pinch gesture, press ctrl+c

And then attach the 2 generated files here ?

Regards,

Hans

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