Public bug reported: I have tried the upgrade several time and it seems to fail when dealing with installed third party applications that have ppa entries. I have disabled them and rerun the upgrade to no avail.
ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.37 ProcVersionSignature: Ubuntu 4.15.0-101.102-generic 4.15.18 Uname: Linux 4.15.0-101-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.14 Architecture: amd64 CrashDB: ubuntu Date: Wed May 20 10:51:33 2020 InstallationDate: Installed on 2018-07-04 (686 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_AU.UTF-8 SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to bionic on 2020-05-19 (0 days ago) ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic dist-upgrade -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879591 Title: 18.04 to 20.04 do-release-upgrade -d at step: Calculating the Changes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1879591/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs