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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1388511 Title: "Could not calculate the upgrade. "2.04 ->14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1388511/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs