Everything went through smoothly now. Maybe this was connected to the fact that my first attempt to upgrade stopped with an "unresolvable problem" with the advice to disable ppas. I did that using synaptic, reloaded repository information and started the next try to upgrade, which was then stopped as described in my original report above. Anyway, all problems are gone now, for whatever reason.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1897725 Title: I got "An unresolvable problem occurred while calculating the upgrade." while trying to upgrade to focal fossa. No further information about the problem was given, just the command for reporting the problem. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1897725/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs