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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Two finger scrolling isn't smooth"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89683#c10">Comment # 10</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Two finger scrolling isn't smooth"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89683">bug 89683</a>
from <span class="vcard"><a class="email" href="mailto:lisec.velimir@gmail.com" title="Velimir Lisec <lisec.velimir@gmail.com>"> <span class="fn">Velimir Lisec</span></a>
</span></b>
<pre>(In reply to Peter Hutterer from <a href="show_bug.cgi?id=89683#c8">comment #8</a>)
<span class="quote">> Related question: did it work before and do you know which one the most
> recent kernel version was that worked? If you use the synaptics xorg driver
> does it work better then?</span >
It didn't work before. Whenever i tried using libinput I always had bad
scrolling. It works great under synaptics driver. Scrolling is done pixel by
pixel.
I get precise recordings of finger movements from ABS_MT_SLOT 0, but SLOT 1
returns it's previous position minus movement from SLOT 0. Those two cancel out
in libinput and touchpad isn't scrolling. But sometimes SLOT 1 gives correct
recording of a finger position. That's when the jump happens. I guess synaptics
driver only tracks SLOT 0 position for scrolling.</pre>
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