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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Double-tap Suppressed by Debounce in VM Guest"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108306">108306</a>
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<th>Summary</th>
<td>Double-tap Suppressed by Debounce in VM Guest
</td>
</tr>
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<th>Product</th>
<td>Wayland
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>XWayland
</td>
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<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>freedesktop.org@kevin.kleinfelter.com
</td>
</tr>
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=141962" name="attach_141962" title="Mouse Event Trace">attachment 141962</a> <a href="attachment.cgi?id=141962&action=edit" title="Mouse Event Trace">[details]</a></span>
Mouse Event Trace
Fast double-taps get treated as a single click.
Behavior is present in libinput 1.10.4-1 but not in 1.8.2-1ubuntu2. (I haven't
tried the versions in between.) Still present in 1.12.0-1.
I think this is similar to <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Logitech K400: double tap on touchpad is filtered by debouncing code"
href="show_bug.cgi?id=105974">https://bugs.freedesktop.org/show_bug.cgi?id=105974</a>
with different hardware.
I'm trying to run Ubuntu 18.04 in a VMware Fusion guest on a Macbook host. If
I double-tap the trackpad fast, it gets treated as a single-click in Ubuntu.
If I double-tap slow (but not too slow) it gets treated as a double-click.
Hitting the narrow window is hard! This makes it tough to run X in a VM on a
Macbook.
I suspect that the host hardware+software delivers a synthesized double-click
to the guest, and that the time between the clicks is very small.
evemu-record shows two "VirtualPS/2 VMware Virtual Mouse" devices and a "VMware
VMware Virtual USB Mouse". Capture of the first of these is attached. It
looks to me like the second tap comes 8 ms after the first, and I'm betting
that is treated as bounce.</pre>
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