Public bug reported: When I run `do-release-upgrade` I get the following output.
Reading cache Checking package manager Reading package lists... Done Building dependency tree Reading state information... Done Hit http://us.archive.ubuntu.com/ubuntu xenial InRelease Get:1 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB] Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [107 kB] Get:3 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease [107 kB] Fetched 323 kB in 0s (0 B/s) Reading package lists... Done Building dependency tree Reading state information... Done Updating repository information Hit http://us.archive.ubuntu.com/ubuntu bionic InRelease Get:1 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Hit http://security.ubuntu.com/ubuntu bionic-security InRelease Get:2 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB] Fetched 163 kB in 0s (0 B/s) Checking package manager Reading package lists... Done Building dependency tree Reading state information... Done Calculating the changes Calculating the changes 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 Reading package lists... Done Building dependency tree Reading state information... Done === Command terminated with exit status 1 (Fri Dec 21 22:49:58 2018) === ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.26 ProcVersionSignature: Ubuntu 4.4.0-140.166-generic 4.4.162 Uname: Linux 4.4.0-140-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Fri Dec 21 22:45:56 2018 EcryptfsInUse: Yes InstallationDate: Installed on 2016-02-02 (1053 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to xenial on 2018-12-22 (0 days ago) ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1809520 Title: Cannot upgrade from 16.04 to 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1809520/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
