Public bug reported:
when trying to upgrade from ubuntu version 18.04.4 to version 19.10, an error
occurs
Failed to calculate system update. An unsolvable problem occurred while
calculating updates. This was probably due to: * Unofficial software packages
not supported by Ubuntu Please use the 'ppa-purge' command from the ppa-purge
package to remove the software from Launchpad PPA and try updating again.
I tried various solutions, but nothing worked and the error still appears.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.37
ProcVersionSignature: Ubuntu 5.3.0-62.56~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-62-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.15
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Jul 8 13:56:11 2020
InstallationDate: Installed on 2019-09-14 (298 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=ru_RU.UTF-8
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-07-08 (0 days ago)
VarLogDistupgradeTermlog:
mtime.conffile..etc.update-manager.release-upgrades: 2019-10-19T16:49:38.839176
** 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/1886803
Title:
error updating ubuntu to version 19.10
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