Public bug reported: Trying to upgrade to 13.10 from 13.04, fetches packages and and then bails and says:
Could not determine 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. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: ubuntu-release-upgrader-core 1:0.192.13 ProcVersionSignature: Ubuntu 3.8.0-32.47-generic 3.8.13.10 Uname: Linux 3.8.0-32-generic x86_64 ApportVersion: 2.9.2-0ubuntu8.4 Architecture: amd64 CrashDB: ubuntu Date: Thu Oct 17 14:51:20 2013 InstallationDate: Installed on 2012-10-23 (358 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) MarkForUpload: True PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to raring on 2013-10-17 (0 days ago) ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade raring third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1240996 Title: Error on Release Upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1240996/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs