[Bug 1536646] [NEW] When requesting upgrade of distribution finds unresolvable problem

[James]

Public bug reported:

When upgrading from Trusty 14.04 to Vivid 15.04, installation only gets
so far and:

Could not determine 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 

15.04 is not a pre-release, and there are too many packages to go
through to find which are not provided by ubuntu.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-77.121-generic 3.13.11-ckt32
Uname: Linux 3.13.0-77-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Thu Jan 21 14:00:54 2016
InstallationDate: Installed on 2014-07-20 (549 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
SystemImageInfo: Error: [Errno 2] No such file or directory: 'system-image-cli'
UpgradeStatus: Upgraded to trusty on 2016-01-21 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2016-01-20T15:34:31.495656

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


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

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1536646

Title:
  When requesting upgrade of distribution finds unresolvable problem

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

Bug description:
  When upgrading from Trusty 14.04 to Vivid 15.04, installation only
  gets so far and:

  Could not determine 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 

  15.04 is not a pre-release, and there are too many packages to go
  through to find which are not provided by ubuntu.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-77.121-generic 3.13.11-ckt32
  Uname: Linux 3.13.0-77-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Jan 21 14:00:54 2016
  InstallationDate: Installed on 2014-07-20 (549 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  SystemImageInfo: Error: [Errno 2] No such file or directory: 'system-image-cli'
  UpgradeStatus: Upgraded to trusty on 2016-01-21 (0 days ago)
  mtime.conffile..etc.update.manager.release.upgrades: 2016-01-20T15:34:31.495656

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1536646/+subscriptions