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I'm getting that error when trying to update to 20.04. I've updated, upgraded, dist-upgraded, showhold [it returns nothing]... like everything is updated and it's still telling me to update before upgrading to 20.04 [I feel like my computer is Mr. Burns saying "I thought I told you to shave off those sideburns!"] Any idea what I'm missing? Ah've updated all I can, she can'ae update noo more!

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  • What OS & release are you currently using (you haven't said). If you sudo apt update, I'd explore that output looking for issues (anything missing for example), then sudo apt full-upgrade again checking the output. Next I'd check you haven't put a hold on any packages (apt-mark showhold)... but the starting point is what is your current release?
    – guiverc
    Nov 21, 2020 at 3:55
  • Oh sorry, doing the LTS jump from 18.04 [Lubuntu]. I've done the showhold, so I know it's not that, but I did not know of full-upgrade. I always did upgrade or dist-upgrade... going to try that now! Nov 21, 2020 at 6:08
  • Ok, full-upgrade doesn't do anything... says I'm all current. Nov 21, 2020 at 6:09
  • apt update does give me errors on Spotify and Google Earth, saying the public key is not available. It's also giving me an error for Chrome, which is odd since I don't have Chrome but rather Chromium... maybe I can delete these and reinstall them after? Nov 21, 2020 at 6:14
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    You've mentioned Lubuntu, which should be installed to upgrade from 18.04 (LXDE) to any later release (LXQt) due to desktop change. In the Lubuntu release notes (lubuntu.me/focal-1-released) you'll read "Note, due to the extensive changes required for the shift in desktop environments, the Lubuntu team does not support upgrading from 18.04 or below to any greater release. Doing so will result in a broken system. If you are on 18.04 or below and would like to upgrade, please do a fresh install."
    – guiverc
    Nov 21, 2020 at 6:18

2 Answers 2

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Between 18.04 and 20.04 Lubuntu has switched desktop environments. Lubuntu used to use LXDE but has switched to LXQt in recent releases.

Switching a DE is a huge change. It involves changing out dozens of core packages that all must work together in harmony to give you a working desktop environment. It's hard to account for all of the possible ways that the new software will work with all of your existing configurations for the LXDE desktop environment.

For this reason, upgrading from Lubuntu 18.04 to Lubuntu 20.04 requires a clean installation from external installation media. The typical upgrade path is unsupported.

The release notes for Lubuntu 20.04 state:

Due to the extensive changes required for the shift in desktop environments, the Lubuntu team does not support upgrading from 18.04 or below to any greater release. Doing so will result in a broken system. If you are on 18.04 or below and would like to upgrade, please do a fresh install.

You can download the new version of Lubuntu at lubuntu.me.

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  • I ended up just backing my up /home on an external HD and replacing the whole OS with Ubuntu Studio 20.04LTS. Ironically, I will have to do the same in a few years, but at least I got a heads up that Ubuntu Studio is drastically changing after this release. Thanks for the help! Nov 23, 2020 at 22:41
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I tried to solve the problem for a long time. (upgrade ubuntu 18 version to 20 lts) In my case, the problem was at the stage

sudo apt-get dist-upgrade

return wine-stable winehq-stable not upgraded solved a problem

change file /etc/apt/sources.list comment line (# ) line deb-src https://dl.winehq.org/wine-builds/ubuntu/

and launched again

sudo apt-get dist-upgrade

return not upgraded count 0

sudo do-release-upgrade

and the upgrade process has started

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  • Maybe you should have read the answer posted one year ago. Although what you describe isn't wrong per se, it isn't an answer for this question. Nov 11, 2021 at 11:34
  • I have not found a solution in other threads. I originally wrote an answer for another question but could not post there. And I found the closest
    – F00x
    Nov 12, 2021 at 9:54
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    This answer is not for the one who originally asked, but for those who will look for a solution to a similar problem on ubuntu =)
    – F00x
    Nov 12, 2021 at 10:00
  • Not really, this answer is for YOU, i.e., for your specific problem that stemmed from adding a likely unneeded software source for Wine (it's already in the repositories). This is unlikely to help anyone else. Nov 18, 2021 at 10:23

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