[Wayland-bugs] [Bug 100873] Elantech touchpad: multi-finger scrolling not working at all

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100873

--- Comment #8 from Moritz Bunkus <moritz at bunkus.org> ---
Thanks for looking into it & for filing the update to the hwdb.

> As for the scroll, I get axis events from this recording but I also notice that there's a fair bit of 3-finger interaction here. Did you intend for that?

That three-finger action was intentional. As the two-finger action didn't
produce any visible scrolling (I was trying this on top of a Google Chrome
window with ~3 pages of content, so there should have been scrolling by Chrome)
I decided to give three-fingers a try, too, so that you'd have more data to
potentially spot problems.

> I recommend running sudo libinput-debug-events to check if the issue could be elsewhere, if it prints axis events, then scrolling works.

Running `sudo libinput-debug-events` only shows POINTER_MOTION events, and only
for one-finger movement. Whenever I try to use two fingers for scrolling, no
events are reported at all, not even POINTER_MOTION events. Same for three
fingers.

Interestingly moving a single finger on the right side up & down doesn't
produce POINTER_MOTION events either — nothing, just like the two-finger scroll
attempt.

Anything else I can try? Any other information I can provide?

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