<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - synaptics touchpad jitter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95290#c11">Comment # 11</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - synaptics touchpad jitter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95290">bug 95290</a>
from <span class="vcard"><a class="email" href="mailto:liam@fightingcrane.com" title="liam@fightingcrane.com">liam@fightingcrane.com</a>
</span></b>
<pre>Hi Peter,
I applied the hwdb override that you provided, but the problem persisted.
However, working from your matching pattern for udev, I applied an evdev
override as follows:
evdev:name:*SynPS/2 Synaptics TouchPad*:dmi:*svnLENOVO*pvrLenovoYoga213:*
EVDEV_ABS_00=:::22
EVDEV_ABS_01=:::22
EVDEV_ABS_35=:::22
EVDEV_ABS_36=:::22
Those fuzz values are far higher than the default values of 8, but I found them
with trial and error. IOW, they probably aren't the min.
I'm going to attach a couple of smaller screencasts which demonstrate the
results of LIBINPUT_WOBBLY_MODEL_TOUCHPAD, and the above evdev override.
I wonder if there is an issue with my touchpad's resolution. That would
explain, I think, the jumps, and the insanely twitchy scrolling speeds (which I
haven't yet reported). I did physically measure the touchpad, and it matched
the values from the udev hwdb (though not the far more precise values reported
by some other tool...which I cannot recall the name of).</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>