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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Lid switch monitoring occasionally gives false positives, erroneously disabling the internal touchpad"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99777">99777</a>
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<th>Summary</th>
<td>Lid switch monitoring occasionally gives false positives, erroneously disabling the internal touchpad
</td>
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<th>Product</th>
<td>Wayland
</td>
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<th>Version</th>
<td>1.5.0
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>blocker
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>libinput
</td>
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<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>pointedstick@zoho.com
</td>
</tr></table>
<p>
<div>
<pre>Hardware: HP Spectre x360 (Kaby Lake, late 2016)
Software: Fedora 25 + GNOME 3.22.2 + libinput 1.6.0-2.fc25
Every since libinput added lid switch support to disable the internal touchpad
(in 1.6.0, I believe), I've had periodic issues with false positives disabling
the touchpad. evemu-record targeting the lid switch shows that what's happening
is that every so often a lid switch closed event is falsely recorded. When this
happens, moving your finger on the touchpad doesn't result in any cursor motion
(confirmed by evemu-record for the touchpad).
Worse, this false state persists across reboots, so when the lid switch is
recorded as closed, rebooting the machine (as you might expect a novice user to
do in a panic) doesn't reset the lid switch value or trigger a re-read, so the
problem does not go away.
Closing and then re-opening the lid to trigger a lid switch change (confirmed
with evemu-record targeting the lid switch) instantly makes the problem
disappear.</pre>
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</p>
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