Public bug reported: 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. 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: Sun Jul 31 19:21:40 2016 InstallationDate: Installed on 2015-02-24 (523 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 2016-08-01 (0 days ago) VarLogDistupgradeTermlog: mtime.conffile..etc.update.manager.release.upgrades: 2016-07-31T18:56:43.471798 ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade third-party-packages trusty ** Attachment added: "screen shot of error" https://bugs.launchpad.net/bugs/1608329/+attachment/4711222/+files/Screenshot%20from%202016-07-31%2019%3A25%3A11.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1608329 Title: Cannot upgrade from 14.04 to 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1608329/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs