[Bug 1420390] Re: update-notifier doesn't cope with multiarch packages installed

[Ubuntu Foundations Team Bug Bot]

** Tags added: patch

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https://bugs.launchpad.net/bugs/1420390

Title:
  update-notifier doesn't cope with multiarch packages installed

Status in update-notifier package in Ubuntu:
  Confirmed

Bug description:
  Frequently - but not always - on a check for updates, update-notifier
  reports an error in the notification area instead of showing that
  updates are available:

  "An error occurred, please run Package Manager from the right-click
  menu or apt-get in a terminal to see what is wrong. The error message
  was: ' Unknown Error: '<class 'KeyError'>' ("The cache has no package
  named 'wine1.6-i386'")'. This usually means that your installed
  packages have unmet dependencies"

  wine1.6-i386 is an i386-architecture package on my system, a foreign-
  arch multiarch dependency of wine1.6.  update-notifier appears to not
  cope correctly with foreign-arch packages.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: update-notifier 3.160
  ProcVersionSignature: Ubuntu 3.18.0-8.9-generic 3.18.1
  Uname: Linux 3.18.0-8-generic x86_64
  ApportVersion: 2.15.1-0ubuntu4
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Feb 10 07:22:52 2015
  InstallationDate: Installed on 2010-09-24 (1600 days ago)
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
  SourcePackage: update-notifier
  UpgradeStatus: Upgraded to vivid on 2014-12-06 (66 days ago)

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