[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #5 from Mantas Mikulėnas <grawity at gmail.com> ---
(In reply to Mantas Mikulėnas from comment #4)
> (In case it's relevant, RMI4 on this laptop is affected by bug 100436, so it
> might just be garbage-in, garbage-out...)

Hmm, I just remembered I can test the legacy PS/2 mode using
'modprobe.blacklist=i2c_hid'. (Fortunately 4.15.x supports PS/2 fallback –
older kernels didn't.)

With the touchpad in PS/2 mode, libinput 1.10.2 missed only 2 scrolls out of
nearly a hundred.

So yes, looks like the problem is definitely caused (or at least worsened) by
the kernel RMI4 bugs.

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