package gconf2 3.2.6-3ubuntu6 failed to install/upgrade: dependency problems - leaving triggers unprocessed

[marstein]

after running the upgrade script errors were reported.
Logon doesn't complete. Used to log me right out.
I did apt-get upgrade/update and now log on leads to an empty screen.

Release 16.04

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: gconf2 3.2.6-3ubuntu6
ProcVersionSignature: Ubuntu 4.2.0-34.39-generic 4.2.8-ckt4
Uname: Linux 4.2.0-34-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Mon Mar 14 10:35:43 2016
DuplicateSignature: package:gconf2:3.2.6-3ubuntu6:dependency problems - leaving triggers unprocessed
ErrorMessage: dependency problems - leaving triggers unprocessed
InstallationDate: Installed on 2016-01-05 (69 days ago)
InstallationMedia: Ubuntu-Server 15.10 "Wily Werewolf" - Release amd64 (20151021)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.0.10.2ubuntu1
SourcePackage: gconf
Title: package gconf2 3.2.6-3ubuntu6 failed to install/upgrade: dependency problems - leaving triggers unprocessed
UpgradeStatus: Upgraded to xenial on 2016-03-14 (0 days ago)

[Launchpad Janitor (janitor)]

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

[Siina Mashek (smashek-deactivatedaccount)]

I have had this happen too, and now my machine is in an "unstable state," per what the updater said.

[DJ_Spies (devin-t)]

I received this error during an upgrade from 15.10 and now the install has hung.

[Silas Riisager Dahl (dahl-silas)]

I'm getting this error as well during the installation of libgtk-3-0 (amd64)

[Silas Riisager Dahl (dahl-silas)]

I fixed the issue by exiting all my open applications, which were Firefox and the file manager - I don't know which of these caused the problem.