[Bug 1537956] [NEW] upgrade does't get past "calcuating changes"

[sed]

Public bug reported:

I am trying to upgrade from 14.04 LTS to 15.04.

I have tried purging ppas to no avail and tried fixing broken packages.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-76.120-generic 3.13.11-ckt30
Uname: Linux 3.13.0-76-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Mon Jan 25 16:48:39 2016
InstallationDate: Installed on 2015-01-29 (361 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-26 (0 days ago)
VarLogDistupgradeTermlog:
 
mtime.conffile..etc.update.manager.release.upgrades: 2016-01-23T10:35:02.343535

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


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

** Attachment added: "log file with all the broken packages!"
   https://bugs.launchpad.net/bugs/1537956/+attachment/4556578/+files/apt.log

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https://bugs.launchpad.net/bugs/1537956

Title:
  upgrade does't get past "calcuating changes"

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

Bug description:
  I am trying to upgrade from 14.04 LTS to 15.04.

  I have tried purging ppas to no avail and tried fixing broken
  packages.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-76.120-generic 3.13.11-ckt30
  Uname: Linux 3.13.0-76-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Mon Jan 25 16:48:39 2016
  InstallationDate: Installed on 2015-01-29 (361 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-01-26 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2016-01-23T10:35:02.343535

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