package mount 2.31.1-0.4ubuntu3.1 failed to install/upgrade: package mount is already installed and configured

[Simon Wenner]

I upgraded from Ubuntu 17.10 to 18.04.1 using the GUI. All kind of packages failed to install and the program crashed. I had to continue and fix the update using the commandline.It seems to have worked in the end but the user experience was horrible.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: mount 2.31.1-0.4ubuntu3.1
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.2
AptdaemonVersion: 1.1.1+bzr982-0ubuntu19
Architecture: amd64
Date: Sat Aug 4 12:09:00 2018
DuplicateSignature:
 package:mount:2.31.1-0.4ubuntu3.1
 Unpacking mawk (1.3.3-17ubuntu3) over (1.3.3-17ubuntu2) ...
 dpkg: error processing package libapparmor1:amd64 (--configure):
  package libapparmor1:amd64 is already installed and configured
ErrorMessage: package mount is already installed and configured
InstallationDate: Installed on 2017-12-07 (239 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.3
SourcePackage: dpkg
Title: package mount 2.31.1-0.4ubuntu3.1 failed to install/upgrade: package mount is already installed and configured
UpgradeStatus: Upgraded to bionic on 2018-08-04 (0 days ago)