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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Use pressure, not just BTN_TOUCH for touch point detection on touchpads"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99355">99355</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Use pressure, not just BTN_TOUCH for touch point detection on touchpads
</td>
</tr>
<tr>
<th>Product</th>
<td>Wayland
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>libinput
</td>
</tr>
<tr>
<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>peter.hutterer@who-t.net
</td>
</tr>
<tr>
<th>Blocks</th>
<td>94236, 94911, 96409, 99306
</td>
</tr></table>
<p>
<div>
<pre>$subject says it all, this is mostly just a tracker bug so that we can have
dependent bugs.
For comparison:
synaptics behaviour is to use a Schmitt trigger with a default of 9.8% for
'low' and 11.7% for 'high' (25/256 and 30/256, respectively). There are
model-specific cases, (some) apple touchpads use an absolute value range of
70/75 and all elantech touchpads just use the pressure minimum + 1.
The elantech value is questionable though and should be reviewed.
libinput likely needs some extra bits to be able to assign per-device values
from the udev hwdb or similar.</pre>
</div>
</p>
<div id="referenced">
<hr style="border: 1px dashed #969696">
<b>Referenced Bugs:</b>
<ul>
<li>
[<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Palm detection: ignore moves over a pressure threshold"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94236">Bug 94236</a>] Palm detection: ignore moves over a pressure threshold
</li>
<li>
[<a class="bz_bug_link
bz_status_NEW "
title="NEW - MacBook Air Mid 2011 too eager to detect thumbs"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94911">Bug 94911</a>] MacBook Air Mid 2011 too eager to detect thumbs
</li>
<li>
[<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - MacBook Air clickpad is too sensitive"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96409">Bug 96409</a>] MacBook Air clickpad is too sensitive
</li>
<li>
[<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Extremely jittery touchpad"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99306">Bug 99306</a>] Extremely jittery touchpad
</li>
</ul>
</div>
<br>
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