gnome shell crashes if screen is locked

[JP]

1) Description: Ubuntu 18.04.4 LTS
Release: 18.04

2) gnome-shell:
  Installé : 3.28.4-0ubuntu18.04.3
  Candidat : 3.28.4-0ubuntu18.04.3
 Table de version :
 *** 3.28.4-0ubuntu18.04.3 500
        500 http://fr.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     3.28.3+git20190124-0ubuntu18.04.2 500
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
     3.28.1-0ubuntu2 500
        500 http://fr.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

3) I want to lock the screen (SUPER+L)
4) Gnome Shell crashes and restart

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.4-0ubuntu18.04.3
ProcVersionSignature: Ubuntu 4.15.0-108.109-generic 4.15.18
Uname: Linux 4.15.0-108-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.15
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Jun 29 13:25:29 2020
DisplayManager: gdm3
InstallationDate: Installed on 2018-06-08 (752 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/zsh
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

I suggest you start by removing these extensions as we find extensions cause a lot of bugs:

'<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>'

If the problem still happens without extensions then please follow these steps:

1. Look in /var/crash for crash files and if found run:
    ubuntu-bug YOURFILE.crash
Then tell us the ID of the newly-created bug.

2. If step 1 failed then look at https://errors.ubuntu.com/user/ID where ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine. Do you find any links to recent problems on that page? If so then please send the links to us.

3. If step 2 also failed then apply the workaround from bug 994921, reboot, reproduce the crash, and retry step 1.

Please take care to avoid attaching .crash files to bugs as we are unable to process them as file attachments. It would also be a security risk for yourself.

[Launchpad Janitor (janitor)]

[Expired for gnome-shell (Ubuntu) because there has been no activity for 60 days.]