Public bug reported: Got the following when doing do-release-upgrade.
==== Could not calculate 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 If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. Restoring original system state Aborting ==== ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: ubuntu-release-upgrader-core 1:0.205.6 ProcVersionSignature: Ubuntu 3.11.0-20.34-generic 3.11.10.6 Uname: Linux 3.11.0-20-generic i686 ApportVersion: 2.12.5-0ubuntu2.2 Architecture: i386 CrashDB: ubuntu Date: Sat Apr 26 12:54:38 2014 InstallationDate: Installed on 2012-04-30 (725 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) MarkForUpload: True PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to saucy on 2014-04-26 (0 days ago) ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug dist-upgrade i386 saucy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1313062 Title: can't upgrade from 13.10 to 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1313062/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs