[Bug 1534356] Re: Upgrage from 14.4 to 15.4. 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

[Brian Murray]

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

** 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/1534356

Title:
  Upgrage from 14.4 to 15.4. 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

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

Bug description:
  The message displayed

  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 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
  Uname: Linux 3.13.0-74-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Jan 14 23:41:16 2016
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-12-15 (1125 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-01-14 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2016-01-14T23:31:06.610119

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