[Bug 1536313] Re: Upgrading from 14.04 LTS to 14.10 point release: Failed to Calculate Upgrade

[Brian Murray]

*** This bug is a duplicate of bug 1534374 ***
    https://bugs.launchpad.net/bugs/1534374

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1534374, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** This bug has been marked a duplicate of bug 1534374
   unable to upgrade to 15.04 due to libstdc++6 SRU

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https://bugs.launchpad.net/bugs/1536313

Title:
  Upgrading from 14.04 LTS to 14.10 point release: Failed to Calculate
  Upgrade

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

Bug description:
  Upgrade options from the current LTS are for either the next LTS or
  the subsequent point release. The next LTS is not yet available and
  the subsequent point release is "failing to calculate", presumably
  because it is no longer supported. If my interpretation of the problem
  is correct, then that suggests an end-user design flaw, id est: There
  is a (large) window of time in which the LTS may be upgraded. Beyond
  that, if new features are needed, upgrading is no longer an option and
  a complete reinstall is required.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.19.0-47.53~14.04.1-generic 3.19.8-ckt10
  Uname: Linux 3.19.0-47-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed Jan 20 13:12:15 2016
  InstallationDate: Installed on 2015-09-04 (138 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-01-20 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2016-01-17T12:09:39.025454

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