[Bug 1457067] [NEW] cannot upgrade to 15.04

[legrandawak]

Public bug reported:

im on 14.10

ubuntu suggest me to update to 15.04 
even tough its not an LTS I agree to install.

it got stuck (tried about a dozen time) at :

Calculating the changes

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.10
ProcVersionSignature: Ubuntu 3.16.0-37.51-generic 3.16.7-ckt9
Uname: Linux 3.16.0-37-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.4
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed May 20 10:34:36 2015
InstallationDate: Installed on 2014-06-04 (349 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to utopic on 2015-05-20 (0 days ago)

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade third-party-packages utopic

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https://bugs.launchpad.net/bugs/1457067

Title:
  cannot upgrade to 15.04

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

Bug description:
  im on 14.10

  ubuntu suggest me to update to 15.04 
  even tough its not an LTS I agree to install.

  it got stuck (tried about a dozen time) at :

  Calculating the changes

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: ubuntu-release-upgrader-core 1:14.10.10
  ProcVersionSignature: Ubuntu 3.16.0-37.51-generic 3.16.7-ckt9
  Uname: Linux 3.16.0-37-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.4
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed May 20 10:34:36 2015
  InstallationDate: Installed on 2014-06-04 (349 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to utopic on 2015-05-20 (0 days ago)

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