https://bugs.freedesktop.org/show_bug.cgi?id=108306
Bug ID: 108306
Summary: Double-tap Suppressed by Debounce in VM Guest
Product: Wayland
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: XWayland
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Created attachment 141962
--> https://bugs.freedesktop.org/attachment.cgi?id=141962&action=edit
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 https://bugs.freedesktop.org/show_bug.cgi?id=105974
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.
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