This bug was fixed in the package mutter - 3.34.2-2ubuntu1

---------------
mutter (3.34.2-2ubuntu1) focal; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.34.2-2) unstable; urgency=medium

  * d/p/EGL-Include-EGL-eglmesaext.h.patch: Cherry pick from master. This
    fixes the generated EGL includes for the move of exlext.h from mesa to
    libglvnd, which has just happened in Debian.

mutter (3.34.2-1ubuntu1) focal; urgency=medium

  * Merge with debian including new upstream version 3.34.2 (LP: #1857037):
    - Fix an hang when using DisplayLink with Wayland (LP: #1853357)
    - Kill window effects on destroy (LP: #1844222)
    - Fixed a crash when using various Java apps such as Intellij (LP: #1845281)
    - Fixed a crash when handling X11 events (LP: #1846403)
    - Fixed some double-scaling in wayland
    - More crash and hang fixes
    Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.34.2-1) unstable; urgency=medium

  * Team upload
  * New upstream release
    - d/libmutter-5-0.symbols: Update
    - d/copyright: Update
  * d/gbp.conf: Use upstream/3.34.x branch
  * Remove obsolete Lintian override
  * Standards-Version: 4.4.1 (no changes required)
  * d/tests: Use correct compiler for proposed autopkgtest
    cross-architecture testing support

 -- Iain Lane <iain.l...@canonical.com>  Sun, 22 Dec 2019 17:24:36 +0000

** Changed in: mutter (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1853357

Title:
  display (whole computer?) hangs when I attempt to use DisplayLink with
  Wayland

Status in mutter package in Ubuntu:
  Fix Released
Status in mutter source package in Eoan:
  New

Bug description:
  [ Impact ]

  I am using the DisplayLink driver for Ubuntu provided at
  https://www.displaylink.com/downloads/ubuntu

  DisplayLink is working under Xorg, but when I try to use it under
  Wayland my whole display hangs and I can't even switch to a different
  VT with Ctrl-Alt-F3 so I think maybe the whole computer is hung? Not
  certain.

  [ Test case ]

  - Install DisplayLink drivers
  - Start GNOME Shell in wayland mode
  - Connect to a display-link dock
  - Expect the shell to work properly and be visible in the external device

  [ Regression potential ]

  Wayland session won't work even for standard drm devices

  
  ----

  I am using the DisplayLink driver for Ubuntu provided at
  https://www.displaylink.com/downloads/ubuntu, which I think is the
  only way to get DisplayLink fully working under Ubuntu? That is,
  DisplayLink didn't work when I installed the evdi-dkms and libevdi0
  Ubuntu packages, and I couldn't find any other packages that might be
  relevant (did I miss something?) so as far as I can tell the only way
  to get everything that's needed is from displaylink.com.

  I'm reporting this issue while logged in under Xorg because I can't
  report it when logged in with my DisplayLink monitors plugged in under
  Wayland, for obvious reasons. :-/

  ProblemType: BugDistroRelease: Ubuntu 19.10
  Package: mutter 3.34.1-1ubuntu1
  ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7
  Uname: Linux 5.3.0-23-generic x86_64
  ApportVersion: 2.20.11-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Nov 20 14:08:21 2019
  InstallationDate: Installed on 2019-09-12 (69 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 
(20190416)SourcePackage: mutter
  UpgradeStatus: Upgraded to eoan on 2019-09-20 (61 days ago)
  modified.conffile..etc.apport.crashdb.conf: [modified]
  mtime.conffile..etc.apport.crashdb.conf: 2019-10-23T16:51:18.143596

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