[Bug 1897725] Re: 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.

[Rainer Schulze-Pillot]

Hm, strange, but after I shut down my computer and started it new and then started the software updater, it proceeded happily and without further complaint with "updating" (not "upgrading").
It's running now, I hope the system will be fine in the end.

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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.

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  I got "An unresolvable problem occurred while calculating the
  upgrade." while trying to upgrade from 18.04 to 20.04. No further
  information about the problem was given before the "If none of this
  applies", just after that and an empty line the command for reporting
  the problem. Before trying to upgrade I installed all available
  updates to 18.04, and then got the message that my system was up to
  date but the upgrade was available.

  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
  Date: Tue Sep 29 13:16:18 2020
  InstallationDate: Installed on 2018-08-14 (776 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-09-29 (0 days ago)
  VarLogDistupgradeTermlog:

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