unity-panel-service crashed with signal 5 in g_type_create_instance()

[Aram Paronikyan]

Just did an ordinary update and hit Restart. The UI hang with keyboard lock and black screen, had to wait for about an hour with hope that some services may keep the system busy, but finally had to reboot the machine manually.

After rebooting, the system started and behaved as usual, but with this error popped up after login.

ProblemType: Crash
DistroRelease: Ubuntu 15.10
Package: indicator-appmenu 15.02.0+15.10.20151002-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Oct 12 13:25:54 2015
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationDate: Installed on 2013-09-15 (756 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 PATH=(custom, user)
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 LANGUAGE=en_US
 XDG_RUNTIME_DIR=<set>
Signal: 5
SourcePackage: indicator-appmenu
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libbamf3.so.2
 g_type_create_instance () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_newv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: unity-panel-service crashed with signal 5 in g_type_create_instance()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
upstart.unity-panel-service.log: (unity-panel-service:5964): Indicator-Appmenu-CRITICAL **: menus_destroyed: assertion 'IS_WINDOW_MENU(wm)' failed

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1201947, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.

[Launchpad Janitor (janitor)]

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