[Bug 1790080] Re: Ubuntu 16.04.5 LTS to 18.04.1 LTS upgrade tentative

[Ubuntu Foundations Team Bug Bot]

*** This bug is a duplicate of bug 1279762 ***
    https://bugs.launchpad.net/bugs/1279762

You seem to have installed the cinnamon package on Ubuntu 13.10.
Unfortunately, that package is not available yet for 14.04. To upgrade
to Ubuntu 14.04 LTS you'll need to either wait for a fix for cinnamon to
be available or uninstall the package and then upgrade.

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** Tags added: xenial2bionic

** Tags added: cinnamon

** This bug has been marked a duplicate of bug 1279762
   upgrade to 14.04 from 13.10 or 12.04 failed - cinnamon fails to upgrade

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1790080

Title:
  Ubuntu 16.04.5 LTS to 18.04.1 LTS upgrade tentative

Status in ubuntu-release-upgrader package in Ubuntu:
  Invalid

Bug description:
  I have tried to perform an upgrade to Ubuntu 18.04.1 LTS where the
  process failed on step 2 "New package sources are set up" ("Neue
  Paketquellen werden eingerichtet"). There appears a message box
  telling me that it could not determine which system updates would be
  available ("Es konnte nicht ermittelt werden, welche
  Systemaktualisierungen verfügbar sind").

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.15.0-33.36~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-33-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: X-Cinnamon
  Date: Fri Aug 31 10:31:24 2018
  EcryptfsInUse: Yes
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-08-31 (0 days ago)
  VarLogDistupgradeTermlog:

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