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ERROR Dist-upgrade failed: 'The package 'update-manager' is marked for
removal but it is in the removal deny list.'
Inside log file /var/log/dist-upgrade/main.log after trying:
sudo do-release-upgrade -d
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.38
ProcVersionSignature: Ubuntu 5.4.0-110.124-generic 5.4.181
Uname: Linux 5.4.0-110-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Tue May 17 23:44:43 2022
InstallationDate: Installed on 2020-05-16 (731 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/usr/bin/zsh
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2022-05-17 (0 days ago)
** Affects: apt (Ubuntu)
Importance: Undecided
Status: Triaged
** Tags: amd64 apport-bug dist-upgrade focal
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Error upgrading from Ubuntu 20.04 to 22.04
https://bugs.launchpad.net/bugs/1973830
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