[Bug 1521635] Re: Upgrade from 14.04. to 15.04. fails. It sais: could not determine, which acualisations are available

[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/1521635

Title:
  Upgrade from 14.04. to 15.04. fails. It sais: could not determine,
  which acualisations are available

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

Bug description:
  It sais, an unsolvable problem has occurred.

  In a second try i switched off any unofficial software from being
  upgraded but the error remains.

  Kind regards,

  SL

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-70.113-generic 3.13.11-ckt29
  Uname: Linux 3.13.0-70-generic i686
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Tue Dec  1 15:05:12 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-03-02 (1369 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2015-12-01 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2015-12-01T14:45:19.898620

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