[Bug 1407757] Re: multi-arch packages cannot be installed due to dpkg wrongly detecting them as already installed

[Karl]

Got directed to this page after error message and report of problem
installing Bluefish editor. This is the second app I installed that gave
me a message to the effect of 'could not complete installation'.
However, in both cases the app installed and is perfectly usable.

I'll add my system info below but if anyone needs more information just
let me know and I'll provide it.

ubuntu 14.04 running in Virtual Box 5.0 with older Guest Extensions.
guest is ubuntu has 2 cores, 2.9 GiB RAM
Host is Windows 8.1 i5 8GB

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https://bugs.launchpad.net/bugs/1407757

Title:
  multi-arch packages cannot be installed due to dpkg wrongly detecting
  them as already installed

Status in aptdaemon package in Ubuntu:
  Fix Committed
Status in nUbuntu:
  Fix Committed

Bug description:
  HOW TO REPRODUCE:
  - Install an affected package.

  EXPECTED BEHAVIOUR:
  - The package to be installed.

  REAL BEHAVIOUR:
  - The package cannot be installed due to dpkg wrongly detecting them as already installed.

  ProblemType: Package
  DistroRelease: Ubuntu 14.04
  Package: libpam-systemd:amd64 204-5ubuntu20.9
  ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
  Uname: Linux 3.13.0-43-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  AptdaemonVersion: 1.1.1-1ubuntu5.1
  Architecture: amd64
  CrashReports:
   640:0:0:1458151:2015-01-05 12:18:11.086621522 -0600:2015-01-05 12:18:12.086621522 -0600:/var/crash/libnss3:amd64.0.crash
   600:0:0:217380:2015-01-05 12:17:09.359944581 -0600:2015-01-05 12:17:10.359944581 -0600:/var/crash/libpam-systemd:amd64.0.crash
   644:0:0:0:2015-01-05 12:18:13.122599379 -0600:2015-01-05 12:18:13.122599379 -0600:/var/crash/libnss3:amd64.0.upload
   600:0:0:217372:2015-01-05 12:17:10.375944347 -0600:2015-01-05 12:17:10.363944604 -0600:/var/crash/libnss3-nssdb.0.crash
  Date: Mon Jan  5 12:17:10 2015
  DuplicateSignature: package:libpam-systemd:amd64:204-5ubuntu20.9:package libpam-systemd:amd64 is already installed and configured
  ErrorMessage: package libpam-systemd:amd64 is already installed and configured
  InstallationDate: Installed on 2015-01-04 (1 days ago)
  InstallationMedia: Mythbuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  SourcePackage: dpkg
  Title: package libpam-systemd:amd64 204-5ubuntu20.9 failed to install/upgrade: package libpam-systemd:amd64 is already installed and configured
  UpgradeStatus: No upgrade log present (probably fresh install)

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