This bug was fixed in the package mutter - 3.38.3-3ubuntu1
---------------
mutter (3.38.3-3ubuntu1) hirsute; urgency=medium
* debian/patches: Backport wayland input thread support (LP: #1690719)
* debian/libmutter-7-0.symbols: Sync as per private symbols changes
* debian/control: Set breaks on previous gnome-shell versions
mutter (3.38.3-3) unstable; urgency=medium
* Team upload
* d/patches: Update to commit 3.38.3-20-g2818cfda8 from gnome-3-38 branch
- Wayland geometry scale fixes
- Fix a crash that can occur on resume from suspend
- Fix drag-and-drop from X11 source to Wayland destination
-- Marco Trevisan (Treviño) <ma...@ubuntu.com> Thu, 25 Feb 2021
23:17:10 +0100
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https://bugs.launchpad.net/bugs/1690719
Title:
Mouse pointer randomly pauses/stutters in gnome shell Wayland sessions
Status in GNOME Shell:
Unknown
Status in Mutter:
Confirmed
Status in gnome-shell package in Ubuntu:
Fix Released
Status in mutter package in Ubuntu:
Fix Released
Bug description:
The mouse pointer randomly pauses/stutters in Gnome Shell (Wayland).
It's not reliably smooth like you would see in Xorg or Mir demo
servers.
Feels like there is a blocking call being made in a GUI thread that
shouldn't have any blocking calls. Although it's not clear if this is
just a problem with pointer input or the shell compositing in general.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.24.2-0ubuntu2
ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
Uname: Linux 4.10.0-20-generic x86_64
ApportVersion: 2.20.4-0ubuntu7
Architecture: amd64
Date: Mon May 15 13:23:22 2017
DisplayManager: lightdm
GsettingsChanges:
b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
b'org.gnome.desktop.interface' b'scaling-factor' b'uint32 1'
InstallationDate: Installed on 2017-05-03 (12 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170502)
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
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