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recently upgrade my ubuntu from 18 to 22 from focal fossa to jammy . And notice that my pgAdmin4 and PostgreSQL are not working. So I want to come back to a previous version. How can I do it?

kodjofr
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    You can't downgrade. You will have to reinstall. See https://ubuntu.com/tutorials/install-ubuntu-desktop#1-overview – Archisman Panigrahi Apr 10 '22 at 19:25
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    Since there's no direct way to upgrade 18.04 to 22.04, can you please elaborate how did you upgrade? Did you edit sources.list and ran sudo apt upgrade? – Kulfy Apr 10 '22 at 19:29
  • Or do what you really should do: fix your progress problem. – Rinzwind Apr 10 '22 at 19:40
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    Your options are limited at this point because Ubuntu 22.04 has not been released yet and questions about 22.04 are currently being closed as off-topic. Once 22.04 is released you can start a new question and ask about and provide details about your actual problem. This is an XY Problem, since the answer to your question is "You cannot downgrade" - but this doesn't solve your problem. I suggest that you reinstall a supported release. Or, if the problems are tolerable for a week or two, wait for 22.04 to be officially released, and then install that – Nmath Apr 10 '22 at 19:40
  • See also Can I skip over releases when upgrading? - The short answer is "No" – Nmath Apr 10 '22 at 19:42
  • @Kulfy Strangely, Focal Fossa is 20.04? – mchid Apr 10 '22 at 20:20
  • Ubuntu 22.04 doesn't yet exist; it's currently the development release Ubuntu jammy and remains that until it reaches RC state which isn't expected until after 14 April 2022, and isn't on-topic here until release on 21 April 2022. https://discourse.ubuntu.com/t/jammy-jellyfish-release-schedule/23906 Please refer https://askubuntu.com/help/on-topic. For support issues with Ubuntu jammy you'll need to use a #ubuntu-next or #ubuntu+1 site (IRC, UF etc) – guiverc Apr 10 '22 at 21:15
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    The title (18 to 22) doesn't match the body of the question (focal[20.04] to jammy[22.04]). So it's unclear what you did. The tested, supported upgrade path from Ubuntu 20.04 to Ubuntu 22.04 is scheduled to open in July 2022 after MUCH more testing and preparation -- you are much too early. There is no tested, supported upgrade path from 18.04 to 22.04 except via 20.04. Advice: Reinstall your previous release of Ubuntu and restore your data and customizations from your backups. – user535733 Apr 10 '22 at 21:43
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    @mchid Yes, 20.04 is focal fossa. However op mentioned Ubuntu 18 which I assumed to be 18.04. I don't know where the typo is. whether in release number or release name. – Kulfy Apr 11 '22 at 04:24

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