Public bug reported: I wanted to update to 16.04, its give error with "Could not calculate changes.
ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: ubuntu-release-upgrader-core 1:15.10.14.4 ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5 Uname: Linux 4.2.0-35-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Wed Apr 6 10:22:12 2016 InstallationDate: Installed on 2016-03-21 (16 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to wily on 2016-04-06 (0 days ago) VarLogDistupgradeTermlog: ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade third-party-packages wily -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1566615 Title: unable to upgrade to 16.04 - could not calculate changes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1566615/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs