Upgrade to 22.04 from 20.04 fails, suspect nvidia probs

[Stephen Taylor]

Upgraded kernel yesterday on 20.04
Restarted and nvidia/cuda not working
Followed action recommended by updater
Removed a load of nvidia stuff

After trying to re-install nvidia driver came to the conclusion that it's no longer compatible with latest 20.04 kernel so decided to upgrade to 22.04

Upgrade fails due to 3rd party held packages, recommend ppa-purge

System reports no held packages so unsure what to purge

Feel a bit stuck

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.39
ProcVersionSignature: Ubuntu 5.15.0-52.58~20.04.1-generic 5.15.60
Uname: Linux 5.15.0-52-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 21 08:06:31 2022
InstallationDate: Installed on 2020-08-27 (784 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2022-10-21 (0 days ago)
VarLogDistupgradeTermlog:

[Nick Rosbrook (enr0n)]

Reviewing the files from your upgrade attempt, you have installed packages from the deadsnakes PPA. Some of the packages installed are newer than those in the official archive, which is keeping some python packages installed which then prevents the upgrade from being calculated. Please try using the ppa-purge tool to remove packages installed from ppa:deadsnakes/ppa. After that you can try upgrading again and if it still fails open a new bug report. Thanks and good luck!