Cannot upgrade to 22.04

[Oliver Weise]

Uprade tells me I have held back broken packages. But "apt full-upgrade" and "sudo dpkg --configure -a" does not seem to find any.

I tried purging PPA packages of which I have some via "ppa-purge" but the tool always tells me "Could not find package list".

The apt.log of the upgrade lists numerous packages that appear to be broken, and I'm not able to find the crucial point.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.41
ProcVersionSignature: Ubuntu 5.15.0-89.99~20.04.1-generic 5.15.126
Uname: Linux 5.15.0-89-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.27
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Sun Dec 10 11:37:39 2023
InstallationDate: Installed on 2022-03-12 (637 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2023-12-10 (0 days ago)
VarLogDistupgradeTermlog:

[Ken Sharp (kennybobs)]

Can you attach the apt log?

[Oliver Weise (ow-bannkreis)]

Sorry, now attaching apt.log

I assumed this would be in the bug context automatically.