gnome-shell crashed with SIGABRT: assertion failure in st_bin_destroy: assertion failed: (priv->child == NULL)

[Sezer]

https://errors.ubuntu.com/problem/d24a5ac63e9b00cde36f6c46ecbcc5b20442be90
https://errors.ubuntu.com/problem/fcc5c581fc0a8c2f8f68314fa383690423a3dc02
https://errors.ubuntu.com/problem/08f665df1bdd54b07b538c33a6ab57e9ad9e85d5

---

I do not know what is happened, just a reporter appeared. But 10 minutes ago when I came to my computer after 5 minutes, it was restarted. It should not be restarted, just should be sleep or locked. However I do not know even this issue related with this report or not.

ProblemType: CrashDistroRelease: Ubuntu 20.04
Package: gnome-shell 3.35.91-1ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 17 13:32:09 2020
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2020-03-13 (3 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200312)
ProcCmdline: /usr/bin/gnome-shell
RelatedPackageVersions: mutter-common 3.35.91-1ubuntu1
Signal: 6SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_assertion_message_expr () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/gnome-shell/libst-1.0.so
 g_closure_invoke () from /lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gnome-shell crashed with SIGABRT in g_assertion_message_expr()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
separator:

[Sezer (sezergonulce)]

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[Apport retracing service (apport)]

StacktraceTop:
 g_assertion_message.cold () from /tmp/apport_sandbox_wjdirg22/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
 g_assertion_message_expr () from /tmp/apport_sandbox_wjdirg22/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
 st_bin_destroy () from /tmp/apport_sandbox_wjdirg22/usr/lib/gnome-shell/libst-1.0.so
 g_closure_invoke () from /tmp/apport_sandbox_wjdirg22/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
 signal_emit_unlocked_R () from /tmp/apport_sandbox_wjdirg22/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Confirmed and tracking in:

https://errors.ubuntu.com/problem/d24a5ac63e9b00cde36f6c46ecbcc5b20442be90
https://errors.ubuntu.com/problem/fcc5c581fc0a8c2f8f68314fa383690423a3dc02

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1867763

[Sebastien Bacher (seb128)]

The bug is easy to trigger here by using those steps
- gnome-control-center -> apparence
- set the launcher to be at the bottom
- dnd the icon slider for a bit or click a bunch of times on the hide toggle

-> segfault

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Launchpad Janitor (janitor)]

This bug was fixed in the package gnome-shell-extension-ubuntu-dock - 67ubuntu20.04.4

---------------
gnome-shell-extension-ubuntu-dock (67ubuntu20.04.4) focal; urgency=medium

  [ Marco Trevisan (Treviño) ]
  * appIcon: Don't show the ShowAppsIcon popup in ubuntu-dock (LP: #1869635)
  * dash: Fix icons DnD when in horizontal mode and when the icons are using
    a scrolled view (LP: #1867763, #1867613)
  * stylesheet: Define width for top/bottom drop placeholder
  * fixed various JS warnings and errors

  [ jesusignacio ]
  * Updated ES translation: show mounted devices + show trash icon

  [ mars ]
  * Update Simplified Chinese translation

  [ Pavel Dvořák ]
  * Update cs.po

  [ Robert Mader ]
  * Use new convenience function to open settings

 -- Marco Trevisan (Treviño) <email address hidden> Thu, 16 Apr 2020 07:48:51 +0200

[Daniel van Vugt (vanvugt)]

Hmm, if this is "fixed" in ubuntu-dock is there anything left to do in gnome-shell?

[Daniel van Vugt (vanvugt)]

Hmm, that's a problem. The bot is marking some crash in groovy (bug 1878715) as a duplicate of this.

[Daniel van Vugt (vanvugt)]

Continued in bug 1898910...

[Daniel van Vugt (vanvugt)]

The issue with Ubuntu 20.10 (groovy) is continued in bug 1898910 and bug 1898005. Please use those bugs from now on.