[Bug 1529490] Re: canot upgrade from 14.04 to last version

[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/1529490

Title:
  canot upgrade from 14.04 to last version

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

Bug description:
  Ubuntu 14.04.3 LTS

  I t told me there was an upgrade but it didn't manage to do it than i did:
  do-release-upgrade
  but it didnt work: Than i did
   sudo apt-get update && sudo apt-get dist-upgrade
  and again
  do-release-upgrade
  but it ended saying:
  Impossibile calcolare l'avanzamento 

  Si è verificato un problema irrisolvibile durante il calcolo 
  dell'avanzamento. 

  I motivi possono essere: 
  * L'avanzamento a una versione di pre-rilascio di Ubuntu 
  * L'esecuzione dell'attuale versione di pre-rilascio di Ubuntu 
  * Pacchetti software non ufficiali non forniti da Ubuntu 

  Se non vengono installati, segnalare il problema usando il comando 
  «ubuntu-bug ubuntu-release-upgrader-core» in un terminale.

  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 nvidia
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sun Dec 27 16:49:59 2015
  InstallationDate: Installed on 2011-09-13 (1566 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2015-12-27 (0 days ago)
  mtime.conffile..etc.update.manager.release.upgrades: 2015-12-18T09:50:42.797953

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