Comment 0 for bug 1766890

Dell XPS 13 9360 (CID 201606-22338)
pre-installed image Xenial

[Description]

When I tried to perform 16.04 --> 18.04 update, the update process failed. The process guide me to file this bug report.

[Steps to reproduce]
1. Update the system to the latest stack by "sudo apt-get update; sudo apt-get dist-upgrade -y"
2. Reboot
3. Make sure /etc/update-manager/release-upgrades is able to update.
4. Perform the release update: "sudo apt-get update; sudo do-release-upgrade -d"

We should use "-d" because bionic beaver has not been officially released yet.

[Expected Result]

The release update completed and I could start using Bionic instead of Xenial.

[Actual Result]

The update process failed. It shows the error message[1] and automatically asking for filing this bug report.

[1]

Preparing to unpack .../qml-module-qtquick-dialogs_5.9.5-0ubuntu1_amd64.deb ...
Unpacking qml-module-qtquick-dialogs:amd64 (5.9.5-0ubuntu1) over (5.5.1-1ubuntu1) ...
Preparing to unpack .../qml-module-qtquick-window2_5.9.5-0ubuntu1_amd64.deb ...
Unpacking qml-module-qtquick-window2:amd64 (5.9.5-0ubuntu1) over (5.5.1-2ubuntu6) ...
(Reading database ... 253705 files and directories currently installed.)
Removing unity-webapps-common (2.4.17+15.10.20150616-0ubuntu2) ...
Removing unity-webapps-service (2.5.0~+16.04.20160201-0ubuntu1) ...
Removing webapp-container (0.23+16.04.20161028-0ubuntu2) ...
Removing webbrowser-app (0.23+16.04.20161028-0ubuntu2) ...
dpkg: cycle found while processing triggers:
 chain of packages whose triggers are or may be responsible:
  bamfdaemon -> gnome-menus
 packages' pending triggers which are or may be unresolvable:
  gnome-menus: /usr/share/applications
  bamfdaemon: /usr/share/applications
  libglib2.0-0:amd64: /usr/share/glib-2.0/schemas
  desktop-file-utils: /usr/share/applications
  mime-support: /usr/share/applications
dpkg: error processing package gnome-menus (--remove):
 triggers looping, abandoned
Processing triggers for desktop-file-utils (0.22-1ubuntu5.1) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for libglib2.0-0:amd64 (2.48.2-0ubuntu1) ...
Errors were encountered while processing:
 gnome-menus
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/gnome-menus.0.crash'
Exception during pm.DoInstall(): E:Sub-process /usr/bin/dpkg returned an error code (1)

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====================================================================================

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: gnome-menus 3.13.3-6ubuntu3.1
ProcVersionSignature: Ubuntu 4.4.0-121.145-generic 4.4.117
Uname: Linux 4.4.0-121-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.16
Architecture: amd64
Date: Wed Apr 25 22:00:01 2018
Dependencies:

DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-20160624-2
ErrorMessage: triggers looping, abandoned
InstallationDate: Installed on 2018-04-25 (0 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.26
SourcePackage: gnome-menus
Title: package gnome-menus 3.13.3-6ubuntu3.1 failed to install/upgrade: triggers looping, abandoned
UpgradeStatus: Upgraded to bionic on 2018-04-25 (0 days ago)