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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Lenovo T440p - slow fine touchpad movement makes cursor jump"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105640#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Lenovo T440p - slow fine touchpad movement makes cursor jump"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105640">bug 105640</a>
from <span class="vcard"><a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> <span class="fn">Peter Hutterer</span></a>
</span></b>
<pre><span class="quote">> (EE) event19 - Synaptics tm2964-001: kernel bug: Touch jump detected and discarded.</span >
Right, so this means even without the patch, libinput discards some jumping
motion.
<span class="quote">> On Xorg with synaptics touchpad work perfectly.</span >
tbh, I don't quite know how this could be, iirc synaptics doesn't do any
pointer jump mitigation and these events are just forwarded as-is. Only
possibility here is that the acceleration ramp-up is higher and thus these get
filtered out in the acceleration code somewhere.</pre>
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