CPU32 failed to report alive state

[Simon Alev]

After the upgrade from Ubuntu 22.04.3 to 22.04.4 I get the message 'CPU32 failed to report alive state' on booting. CPU32 is also reported as offline under lscpu. The CPU is an AMD EPYC 9334, 32 cores/64 threads.
Problem is also present with 22.04.4 USB livestick. 22.04.3 USB live stick and installation works fine.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubuntu-release-upgrader-core 1:22.04.19
ProcVersionSignature: Ubuntu 6.5.0-21.21~22.04.1-generic 6.5.8
Uname: Linux 6.5.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Fri Mar 1 16:30:05 2024
InstallationDate: Installed on 2024-03-01 (0 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)