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<body><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> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED MOVED - Touchpad jitter on Dell Latitude E7240 with 1.10.6"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106425">bug 106425</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEEDINFO
</td>
<td>RESOLVED
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>MOVED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED MOVED - Touchpad jitter on Dell Latitude E7240 with 1.10.6"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106425#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED MOVED - Touchpad jitter on Dell Latitude E7240 with 1.10.6"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106425">bug 106425</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>The match string is best shortened to:
evdev:name:AlpsPS/2 ALPS GlidePoint:dmi:*svnDellInc.:pnLatitudeE7240:*
and then the EVDEV_ABS lines that you cut from the output, that should fix the
10mm mismatch for the vertical dimension.
This is a semi-mt touchpad too, so I think you're best off just using a fuzz of
8 here and accept that you need it. These touchpads are all terrible anyway,
putting more code into libinput to have heuristics here wouldn't make much
sense tbh. The EVDEV_ABS line looked roughly like this:
EVDEV_ABS_00=104:1954:30
to add the fuzz of 8 to it, you append a :8
EVDEV_ABS_00=104:1954:30:8
Replace the first three numbers with the one from the touchpad-edge-detector
and do the same for the other overrides it spits out. Then look at
60-evdev.hwdb for instructions how to install and test this locally. Once done,
reboot, test, if it works you should submit this as a PR to the systemd repo on
github.
Oh, and check for any typos in my suggestions, just in case :)
I'm closing this on the optimistic assumption that it'll all magically work
once this is in place ;)</pre>
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