[Bug 1493402] [NEW] Problem when updating to 15.04 from 14.04

[Thiago dos Santos]

Public bug reported:

I have just received the above message when upgrading from 14.04 to
15.04.

Checking package manager
Reading package lists... Done    
Building dependency tree          
Reading state information... Done
Building data structures... Done 

Calculating the changes

Calculating the changes

Could not calculate the upgrade

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 

If none of this applies, then please report this bug using the 
command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. 


Restoring original system state

Aborting
Reading package lists... Done    
Building dependency tree          
Reading state information... Done
Building data structures... Done

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.10
Uname: Linux 3.18.1-031801-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.5
Architecture: amd64
CrashDB: ubuntu
Date: Tue Sep  8 11:17:43 2015
InstallationDate: Installed on 2014-07-12 (423 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to utopic on 2015-09-08 (0 days ago)

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


** Tags: amd64 apport-bug dist-upgrade utopic

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https://bugs.launchpad.net/bugs/1493402

Title:
  Problem when updating to 15.04 from 14.04

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

Bug description:
  I have just received the above message when upgrading from 14.04 to
  15.04.

  Checking package manager
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done
  Building data structures... Done 

  Calculating the changes

  Calculating the changes

  Could not calculate the upgrade

  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 

  If none of this applies, then please report this bug using the 
  command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. 

  
  Restoring original system state

  Aborting
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done
  Building data structures... Done

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: ubuntu-release-upgrader-core 1:14.10.10
  Uname: Linux 3.18.1-031801-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.5
  Architecture: amd64
  CrashDB: ubuntu
  Date: Tue Sep  8 11:17:43 2015
  InstallationDate: Installed on 2014-07-12 (423 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to utopic on 2015-09-08 (0 days ago)

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