Public bug reported:
I cannot upgrade because of non-official software but I removed every
ppa repository and nothing has changed.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.42 [origin: unknown]
ProcVersionSignature: Ubuntu 5.4.0-67.75~18.04.1-generic 5.4.94
Uname: Linux 5.4.0-67-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.23
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Sat Feb 27 09:26:55 2021
InstallationDate: Installed on 2019-06-10 (627 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2021-02-27 (0 days ago)
** 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/1917104
Title:
do-release-update from 18.04 to 20.04 failed
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