Public bug reported:
There was an unsolvable problem during the upgrade calculation.
This was probably caused by:
* unofficial software packages that are not from Ubuntu.
Please use the "ppa-purge" command from the package
"Ppa-purge" to remove packets from a
PPA Launchpad repository, and then try to rerun the upgrade.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 5.4.0-52.57~18.04.1-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Mon Oct 26 15:18:28 2020
InstallationDate: Installed on 2019-12-23 (307 days ago)
InstallationMedia: Xubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64
(20190805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-10-26 (0 days ago)
VarLogDistupgradeTermlog:
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic dist-upgrade third-party-packages
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https://bugs.launchpad.net/bugs/1901551
Title:
I have tried several times to install the updtae evrsion from 18.04 to
20.04. Each time, I have the same answer : There was an unsolvable
problem during the upgrade calculation. This was probably caused
by: * unofficial software packages that are not from Ubuntu. Please
use the "ppa-purge" command from the package "Ppa-purge" to remove
packets from a PPA Launchpad repository, and then try to rerun the
upgrade.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1901551/+subscriptions
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