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When trying to upgrade 20.04 to 20.10 using update-manager button Upgrade, I get a message that I must first install all updates. I did sudo apt update + upgrade and I installed all updates suggested by update manager. Now I get no message in the terminal, but nothing happens when I click the button Upgrade or use the command sudo apt -y update && apt -y dist-upgrade. Fyi: I have a triple boot system with Windows 10/Ubuntu LTS 20.04.1 and Ubuntu development version (currently 20.04.1) on tree different partitions (2 hard disks).

Hannie
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2 Answers2

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You're on an LTS (long time support) version. There is some safety built in the system that you don't inadvertently upgrade to a non-LTS version.

To overrule this, just for this upgrade, do:

sudo nano /etc/update-manager/release-upgrades

and change Prompt=lts to Prompt=normal.

Then do sudo do-release-upgrade and your upgrade should proceed normally.

Jos
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  • Hello Jos. I already had promtpt=normal in /etc/update-manager/release-upgrades. The command sudo do-release-upgrade gives me the same output in the terminal: Gelieve eerst alle beschikbare updates voor uw versie te installeren alvorens u begint met de upgrade. Translation: please install all available updates for your version before starting the upgrade. What should I do now? I have downloaded the 20.10 iso, but I prefer to not use that. – Hannie Oct 28 '20 at 08:57
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    You may need to do sudo apt dist-upgrade first. See here. – Jos Oct 28 '20 at 09:16
  • That did not work either. Same message about first updating lts version. I did sudo apt-get update and upgrade once again before do-release-upgrade. – Hannie Oct 28 '20 at 09:49
  • sudo apt-get dist-upgrade does not work either. Message: 0 upgraded, 0 newly installed, 0 to be removed and 0 not upgraded – Hannie Oct 28 '20 at 09:52
  • Strange. I can't think of anything else to try at this point. Perhaps sudo apt clean and reboot? – Jos Oct 28 '20 at 10:14
  • sudo apt dist-upgrade thanks jobs ! – Rγσ ξηg Lιαη Ημ 雷欧 Apr 29 '21 at 09:12
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This may help.

I had two packages (related to tor) failing install due to an unmet dependancy. (found using sudo apt list --upgradable)

So I removed tor and did the upgrade:

sudo apt remove tor

sudo do-release-upgrade

And then proceeded with the install.

I would reinstall tor after the upgrade.

The lack of error messages was frustrating.

I'm sure it's logged somewhere.

Artur Meinild
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Paul van den Bergen
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