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When I do sudo do-release-upgrade to update to the next LTS, I get

Could not calculate the upgrade 

An unresolvable problem occurred while calculating the upgrade.

The cause seems to be this (from /var/log/dist-upgrade/main.log):

WARNING Can't mark 'ubuntu-desktop' for upgrade (E:Unable to correct problems, you have held broken packages.)
ERROR Dist-upgrade failed: 'Broken packages after upgrade: ubuntu-desktop'

How do I resolve this problem? /var/log/dist-upgrade/apt.log displays too many broken packages, and I am lost on how to proceed. I know I should not delete ubuntu-desktop, what should I do?

Note, I did sudo apt update and sudo apt upgrade. Nothing reports broken packages other than do-release-upgrade. I do not think I have broken package in current version, it seems more like upgrading would cause some broken links.

Abastro
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  • You should fix the broken packages and make sure your system is fully updated before attempting an upgrade. – ChanganAuto Sep 12 '22 at 10:21
  • Does this answer your question? [Unable to correct problems, you have held broken packages](https://askubuntu.com/questions/223237/unable-to-correct-problems-you-have-held-broken-packages) – Artur Meinild Sep 12 '22 at 10:21
  • You will have to run `sudo apt update` and `sudo apt upgrade` ,,, and fix any problems occurring here, among them the 'held broken packages.' – Soren A Sep 12 '22 at 10:29
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    @ChanganAuto My system is fully updated, and I do not think there are broken packages when I am remaining in focal. – Abastro Sep 12 '22 at 10:29
  • @SorenA Ofc I did `sudo apt update` and `sudo apt upgrade` before dist-upgrade. Does not affect – Abastro Sep 12 '22 at 10:29
  • @ArturMeinild Ugh, that one is about broken packages while installing. This one happens when (and only when) I do `do-release-upgrade`, specifically with `ubuntu-desktop` package. – Abastro Sep 12 '22 at 10:34
  • Something that you currently have installed is incompatible with 22.04. It's unlikely to be anything from the Ubuntu repositories. It's likely to be something you installed from some non-Ubuntu source or PPA. Review your apt sources, recall why you added those non-Ubuntu sources, uninstall that non-Ubuntu software, and disable those non-Ubuntu sources. Once you have uninstalled the conflicting packages, the release-upgrade will work. After the release-upgrade, you can *try* to reinstall the conflicting software, though is it also likely you will need to seek a compatible alternative. – user535733 Sep 12 '22 at 15:01
  • Also see /var/log/dist-upgrade/main.log for clues on what might be 'broken'. – user535733 Sep 12 '22 at 15:04
  • @user535733 Thank you, I am in great pain as `ppa-purge` was not able to detect my packages. ..Do I need to uninstall steam? Also I do not recall which packages vulkan has installed. – Abastro Sep 13 '22 at 01:23

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