Ubuntu upgrade from 23.04 to 23.10

[Luigi De Luca]

Before second step of upgrading completes it shows up ->

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

 This was likely caused by:
 * Unofficial software packages not provided by Ubuntu
Please use the tool 'ppa-purge' from the ppa-purge
package to remove software from a Launchpad PPA and
try the upgrade again.

If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to investigate this yourself the log files in '/var/log/dist-upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'.

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: ubuntu-release-upgrader-core 1:23.04.7
ProcVersionSignature: Ubuntu 6.2.0-39.40-generic 6.2.16
Uname: Linux 6.2.0-39-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.26.1-0ubuntu2.1
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CrashReports:
 640:1000:125:1944088:2023-12-18 21:52:47.190630524 +0100:2023-12-18 21:52:47.238631781 +0100:/var/crash/_usr_libexec_tracker-extract-3.1000.crash
 644:1000:125:0:2023-12-18 21:52:47.190630524 +0100:2023-12-18 21:52:47.190630524 +0100:/var/crash/_usr_libexec_tracker-extract-3.1000.upload
 600:120:125:37:2023-12-18 21:52:48.802672833 +0100:2023-12-18 21:52:48.802672833 +0100:/var/crash/_usr_libexec_tracker-extract-3.1000.uploaded
CurrentDesktop: ubuntu:GNOME
Date: Tue Dec 19 10:15:27 2023
InstallationDate: Installed on 2022-01-14 (703 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to lunar on 2023-12-19 (0 days ago)
VarLogDistupgradeAptHistorylog:
 Start-Date: 2023-12-19 10:05:06
 Requested-By: luigi (1000)
 End-Date: 2023-12-19 10:05:06
VarLogDistupgradeApttermlog:
 Log started: 2023-12-19 10:05:06
 Log ended: 2023-12-19 10:05:06
VarLogDistupgradeTermlog:

EDIT:
I recently managed to install the Ubuntu image with the kernel version 6.6.7. Before installing Ubuntu 23.10, I noticed logs related to the configuration of the Linux 6.6.7 kernel, which, however, did not boot successfully on my system.

After successfully installing Ubuntu 23.10, I removed the newly installed 6.6.7 kernel and reverted to a more stable version of the kernel (version 6) that boots without any issues. (This is a workaround not a fix)