Public bug reported:
Can not upgrade to 20.04 from 18.04 after checking repository information
upgrades stops at calculate changes, saying "Could not calculate the upgrade"
then the error message shows
"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'."
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 5.4.0-42.46~18.04.1-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.16
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Sat Aug 8 14:33:33 2020
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-08-08 (0 days ago)
mtime.conffile..etc.update-manager.release-upgrades: 2020-08-08T00:22:03.094800
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic dist-upgrade
** Summary changed:
- Can not upgrade to Ubuntu 20.04 fro Ubuntu 18.04
+ Can not upgrade to Ubuntu 20.04 from Ubuntu 18.04
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https://bugs.launchpad.net/bugs/1890878
Title:
Can not upgrade to Ubuntu 20.04 from Ubuntu 18.04
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