[Bug 1608089] [NEW] The Ubuntu Release Upgrader does not "calculate the upgrade."

[Sadiq Sobur]

Public bug reported:

As I upgrade from Ubuntu 14.04 to 16.04, it does not go past
"Calculating the upgrade." An Error message pops up saying "Could not
calculate the upgrade  An unresolvable problem occurred while
calculating the upgrade." I expected the upgrade to go smoothly like
normal. Third Party Sources were disabled in the beginning of the
upgrade.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-93.140-generic 3.13.11-ckt39
Uname: Linux 3.13.0-93-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sat Jul 30 12:29:32 2016
InstallationDate: Installed on 2016-01-15 (197 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 2016-07-30 (0 days ago)
VarLogDistupgradeTermlog:
 
mtime.conffile..etc.update.manager.release.upgrades: 2016-07-24T00:10:22.823441

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


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

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https://bugs.launchpad.net/bugs/1608089

Title:
  The Ubuntu Release Upgrader does not "calculate the upgrade."

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

Bug description:
  As I upgrade from Ubuntu 14.04 to 16.04, it does not go past
  "Calculating the upgrade." An Error message pops up saying "Could not
  calculate the upgrade  An unresolvable problem occurred while
  calculating the upgrade." I expected the upgrade to go smoothly like
  normal. Third Party Sources were disabled in the beginning of the
  upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-93.140-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-93-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sat Jul 30 12:29:32 2016
  InstallationDate: Installed on 2016-01-15 (197 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 2016-07-30 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2016-07-24T00:10:22.823441

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