/usr/bin/gnome-control-center:11:g_type_check_instance_cast:ext_ubuntu_dock_placement_changed_callback:g_closure_invoke:signal_emit_unlocked_R:g_signal_emit_valist

Bug #1725219 reported by errors.ubuntu.com bug bridge
62
This bug affects 7 people
Affects Status Importance Assigned to Milestone
gnome-control-center (Ubuntu)
Fix Released
High
Didier Roche-Tolomelli
Artful
Fix Released
High
Unassigned

Bug Description

[ Impact ]
* This is a popular crash when using the Dock settings in gnome control center. The crash is harmless apart from closing g-c-c as the settings are applied, but triggers apport.

[ Test case ]
* This is hard to reproduce, as it means the stracktrace seems to imply that you go to the Dock panel, then another one, and trigger one of the dock callback signals like pluging/unplugging a monitor.

[ Regression potential ]
* We change one signal connection by another one which automatically disconnect. So, the callback may not work at all (which it doesn't, tested), or may continue to crash (unlikely, it's a standard glib function).

The Ubuntu Error Tracker has been receiving reports about a problem
regarding gnome-control-center. This problem was most recently seen with package version 1:3.26.1-0ubuntu4, the problem page at https://errors.ubuntu.com/problem/fb911c401b7ebdc71c10484ecc74c37345e34f97 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.

Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in gnome-control-center (Ubuntu):
status: New → Confirmed
Revision history for this message
Sebastien Bacher (seb128) wrote :

Thank you for your bug report.

Changed in gnome-control-center (Ubuntu):
assignee: nobody → Didier Roche (didrocks)
importance: Undecided → High
description: updated
Revision history for this message
Chris Halse Rogers (raof) wrote : Please test proposed package

Hello errors.ubuntu.com, or anyone else affected,

Accepted gnome-control-center into artful-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gnome-control-center/1:3.26.1-0ubuntu5 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-artful to verification-done-artful. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-artful. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Changed in gnome-control-center (Ubuntu Artful):
status: New → Fix Committed
tags: added: verification-needed verification-needed-artful
Revision history for this message
Sebastien Bacher (seb128) wrote :

The segfault was easy to reproduce by opening the panel, changing to another one and then using the gsettings command line to change one of the dock options.

The 1:3.26.1-0ubuntu5 update has no segfault nor error anymore in valgrind, marking as verification-done-artful

Changed in gnome-control-center (Ubuntu Artful):
importance: Undecided → High
tags: added: verification-done verification-done-artful
removed: verification-needed verification-needed-artful
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package gnome-control-center - 1:3.26.1-0ubuntu5

---------------
gnome-control-center (1:3.26.1-0ubuntu5) artful; urgency=medium

  * debian/patches/71_ubuntu_dock_settings.patch:
    - tentatively fix crashes when panel is disposed (LP: #1725219)
  * debian/patches/series, enable ubuntu-legacy-notifications.patch:
    - Ubuntu ships compatibility names for .desktop that got renamed
      upstream, those use NoDisplay but the panel doesn't respect that key,
      skip known buggy entries for file-roller and nautilus (LP: #1716267)

 -- Didier Roche <email address hidden> Tue, 24 Oct 2017 17:42:28 +0200

Changed in gnome-control-center (Ubuntu):
status: Confirmed → Fix Released
Changed in gnome-control-center (Ubuntu Artful):
status: Fix Committed → Fix Released
Revision history for this message
Brian Murray (brian-murray) wrote : Update Released

The verification of the Stable Release Update for gnome-control-center has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

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