Sorry, I already went ahead with a clean install. I do recall having a similar problem with 16.04 > 18.04 and that gnuradio had something to do with it.
From: Daniel Letzeisen<mailto:1896...@bugs.launchpad.net> Sent: Friday, September 25, 2020 1:20 AM To: coope...@gmail.com<mailto:coope...@gmail.com> Subject: [Bug 1896848] Re: Upgrade from 18.04 to 20.04: "An unresolvable problem occurred while calculating the upgrade." apt.log shows hundreds of broken things. I don't claim to be an expert, but if possible, remove gnuradio (and gnuradio-dev) and reinstall it after upgrade. That's what looks to be causing the cascade of errors in your apt log. Let me/us know if that works. ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/1896848 Title: Upgrade from 18.04 to 20.04: "An unresolvable problem occurred while calculating the upgrade." apt.log shows hundreds of broken things. Status in ubuntu-release-upgrader package in Ubuntu: Incomplete Bug description: Upgrade from 18.04 to 20.04: Could not calculate the upgrade An unresolvable problem occurred while calculating the upgrade. If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to investigate this yourself the log files in '/var/log/dist- upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'." apt.log shows hundreds of broken things. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.38 ProcVersionSignature: Ubuntu 4.15.0-118.119-generic 4.15.18 Uname: Linux 4.15.0-118-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.17 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: ubuntu:GNOME Date: Wed Sep 23 19:03:47 2020 InstallationDate: Installed on 2016-01-04 (1724 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to bionic on 2020-09-23 (0 days ago) VarLogDistupgradeTermlog: mtime.conffile..etc.update-manager.release-upgrades: 2020-09-23T18:00:44.468934 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1896848/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896848 Title: Upgrade from 18.04 to 20.04: "An unresolvable problem occurred while calculating the upgrade." apt.log shows hundreds of broken things. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1896848/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
