[Bug 1774487] Re: I'm still using 12.04 because 'dist-upgrade' fails.

[Paul White]

Thank you for reporting this bug to Ubuntu.

Ubuntu 12.04 (precise) reached end-of-life on April 28, 2017.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

Take a look at https://help.ubuntu.com/community/EOLUpgrades but
probably best to install a currently supported release.

Please install or upgrade to the latest Ubuntu version and re-test. If
you then find the issue is still present in the newer Ubuntu version,
please add a comment here telling us which new version it is in and
change the bug status to Confirmed.

By the way, please don't assign bugs to yourself unless you have the
capability to fix them.

** Changed in: update-manager (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1774487

Title:
  I'm still using 12.04 because 'dist-upgrade' fails.

Status in update-manager package in Ubuntu:
  Incomplete

Bug description:
  An unresolvable problem occurred while calculating the upgrade.

  This can be caused by: 
  * Upgrading to a pre-release version of Ubuntu 
  * Running the current pre-release version of Ubuntu 
  * Unofficial software packages not provided by Ubuntu

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.22
  ProcVersionSignature: Ubuntu 3.13.0-117.164~precise1-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-117-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.15
  Architecture: amd64
  Date: Thu May 31 21:15:57 2018
  GsettingsChanges:
   
  InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2018-05-31 (0 days ago)

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