Public bug reported:
have not any idea to fix error when upgrade system from 20.04 to
22.04,get this error at /var/log/dist-upgrade/main.log: ERROR Dist-
upgrade failed: 'The package 'update-manager' is marked for removal but
it is in the removal deny list.'
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.41
ProcVersionSignature: Ubuntu 5.4.0-216.236-generic 5.4.291
Uname: Linux 5.4.0-216-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.29
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
Date: Wed Jul 9 01:57:17 2025
InstallationDate: Installed on 2021-05-04 (1526 days ago)
InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64
(20200806.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2025-07-08 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade focal
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https://bugs.launchpad.net/bugs/2116208
Title:
update ubuntu 20.04 to 22.04 fail:"ERROR Dist-upgrade failed: 'The
package 'update-manager' is marked for removal but it is in the
removal deny list.'"
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