Thanks. I eventually removed enough packages from the system to allow the upgrade to work. It was a long time ago so I don't remember the details anymore and I think I threw out my notes.
Since then, apt upgrades, including kernel upgrades, have been working fine. Just one more year, and we get to do this all over again... On Fri, May 14, 2021 at 11:03 PM Jesse Mallen <1902...@bugs.launchpad.net> wrote: > I also ran into this exact issue attempting an upgrade from 18.04 to > 20.04. Let me know if I can provide any additional detail. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1902767 > > Title: > do-release-upgrade exits with "An unresolvable problem occurred while > calculating the upgrade" > > Status in ubuntu-release-upgrader package in Ubuntu: > Confirmed > > Bug description: > This error comes up both before and after removing two ppas using ppa- > purge. Note that I am using a low-latency kernel with bionic. I would > suspect this but I upgraded another system running this kernel with no > problems. > > ProblemType: Bug > DistroRelease: Ubuntu 18.04 > Package: ubuntu-release-upgrader-core 1:18.04.40 > ProcVersionSignature: Ubuntu 5.4.0-52.57~18.04.1-lowlatency 5.4.65 > Uname: Linux 5.4.0-52-lowlatency x86_64 > NonfreeKernelModules: nvidia_modeset nvidia > ApportVersion: 2.20.9-0ubuntu7.18 > Architecture: amd64 > CrashDB: ubuntu > Date: Tue Nov 3 13:18:42 2020 > InstallationDate: Installed on 2020-06-07 (148 days ago) > InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 > (20200203.1) > PackageArchitecture: all > ProcEnviron: > TERM=xterm-256color > PATH=(custom, no user) > LANG=en_US.UTF-8 > SHELL=/bin/bash > SourcePackage: ubuntu-release-upgrader > Symptom: ubuntu-release-upgrader > UpgradeStatus: Upgraded to bionic on 2020-11-03 (0 days ago) > > To manage notifications about this bug go to: > > https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1902767/+subscriptions > > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1902767 Title: do-release-upgrade exits with "An unresolvable problem occurred while calculating the upgrade" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1902767/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs