[Bug 1388511] [NEW] "Could not calculate the upgrade. "2.04 ->14.04

[LaunchpadLoginDefectReport]

Public bug reported:

Could not calculate the upgrade. An unresolvable problem occured while
calculating the upgrade". There are no details in the error dialog about
what went wrong. A screenshot of the error dialog and the usual Ubuntu-
collected information is attached.

This is a dupilcate, of course, but the bug reporting system won't find
the correct bug report (Bug #1274672 ) even if the exact title or number
is given.  A Google search indicates 1,100 hits related to "could not
calculate the upgrade". So it's probably a real bug.

Some comments on this bug indicate that "cinnamon" is the problem.
"Cinnamon" is not installed.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.17
ProcVersionSignature: Ubuntu 3.2.0-70.105-generic 3.2.63
Uname: Linux 3.2.0-70-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.7
Architecture: amd64
Date: Sat Nov  1 23:06:44 2014
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1414908173
 com.ubuntu.update-manager window-height 626
 com.ubuntu.update-manager window-width 957
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2014-11-02 (0 days ago)
VarLogDistupgradeTermlog:

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


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

** Attachment added: "Image of error message"
   https://bugs.launchpad.net/bugs/1388511/+attachment/4251072/+files/ubuntuupgradefail.png

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https://bugs.launchpad.net/bugs/1388511

Title:
  "Could not calculate the upgrade. "2.04 ->14.04

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

Bug description:
  Could not calculate the upgrade. An unresolvable problem occured while
  calculating the upgrade". There are no details in the error dialog
  about what went wrong. A screenshot of the error dialog and the usual
  Ubuntu-collected information is attached.

  This is a dupilcate, of course, but the bug reporting system won't
  find the correct bug report (Bug #1274672 ) even if the exact title or
  number is given.  A Google search indicates 1,100 hits related to
  "could not calculate the upgrade". So it's probably a real bug.

  Some comments on this bug indicate that "cinnamon" is the problem.
  "Cinnamon" is not installed.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.17
  ProcVersionSignature: Ubuntu 3.2.0-70.105-generic 3.2.63
  Uname: Linux 3.2.0-70-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu17.7
  Architecture: amd64
  Date: Sat Nov  1 23:06:44 2014
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1414908173
   com.ubuntu.update-manager window-height 626
   com.ubuntu.update-manager window-width 957
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2014-11-02 (0 days ago)
  VarLogDistupgradeTermlog:

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