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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Two-finger scrolling broken in 1.10.2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105447#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Two-finger scrolling broken in 1.10.2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105447">bug 105447</a>
from <span class="vcard"><a class="email" href="mailto:grawity@gmail.com" title="Mantas Mikulėnas <grawity@gmail.com>"> <span class="fn">Mantas Mikulėnas</span></a>
</span></b>
<pre>(In reply to Mantas Mikulėnas from <a href="show_bug.cgi?id=105447#c4">comment #4</a>)
<span class="quote">> (In case it's relevant, RMI4 on this laptop is affected by <a class="bz_bug_link
bz_status_NEW "
title="NEW - Pointer jumps when using the rmi4 driver for precision touchpads"
href="show_bug.cgi?id=100436">bug 100436</a>, so it
> might just be garbage-in, garbage-out...)</span >
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.</pre>
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