[Bug 1379294] [NEW] `do-release-upgrade -d`: Could not calculate the upgrade

[Alex Shu]

Public bug reported:

In the end of its process the command produces an error message reported
in subject.

I've checked further causes, as it was suggested:

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 

None of this applied, so I submitted this bug.

Please provide me what happened and what can I do to upgrade from 12.04
LTS to 14.04 LTS?

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.17
ProcVersionSignature: Ubuntu 3.2.0-69.103-generic 3.2.62
Uname: Linux 3.2.0-69-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.7
Architecture: amd64
Date: Thu Oct  9 14:20:23 2014
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1386178248
 com.ubuntu.update-manager show-details true
 com.ubuntu.update-manager window-height 789
 com.ubuntu.update-manager window-width 1049
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2014-10-09 (0 days ago)

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


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

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https://bugs.launchpad.net/bugs/1379294

Title:
  `do-release-upgrade -d`: Could not calculate the upgrade

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  In the end of its process the command produces an error message
  reported in subject.

  I've checked further causes, as it was suggested:

  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 

  None of this applied, so I submitted this bug.

  Please provide me what happened and what can I do to upgrade from
  12.04 LTS to 14.04 LTS?

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.17
  ProcVersionSignature: Ubuntu 3.2.0-69.103-generic 3.2.62
  Uname: Linux 3.2.0-69-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu17.7
  Architecture: amd64
  Date: Thu Oct  9 14:20:23 2014
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1386178248
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 789
   com.ubuntu.update-manager window-width 1049
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2014-10-09 (0 days ago)

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