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Through VirtualBox was installed long time ago Ubuntu Desktop 20.04 (focal) and was upgraded successfully to 22.04 jammy

Now, the reason of this post, when the sudo apt update command is executed appears:

sudo apt update
Hit:1 http://repo.mysql.com/apt/ubuntu focal InRelease
Hit:2 https://download.docker.com/linux/ubuntu focal InRelease                                                                       
Hit:3 https://dl.google.com/linux/chrome/deb stable InRelease                                                                        
Hit:4 http://security.ubuntu.com/ubuntu jammy-security InRelease                                                                     
Hit:5 http://pe.archive.ubuntu.com/ubuntu jammy InRelease                            
Hit:6 http://pe.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:7 http://pe.archive.ubuntu.com/ubuntu jammy-backports InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
11 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: http://repo.mysql.com/apt/ubuntu/dists/focal/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.

Observe the two first lines, they contain the focal term, and the others lines contain the jammy term.

How to upgrade the repositories locations from focal to jammy?

The goal is update correctly MySQL and Docker.

Manuel Jordan
  • 2,082

1 Answers1

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Open Software & Sources, and go to the Other Software Tab.

Find the repository corresponding to MySQL and Docker, and click on Edit.

Afterwards, change focal to jammy. Run sudo apt update.

Beware that the repositories may not host packages for jammy (in that case, sudo apt update will show warnings, and if that happens it would be a good idea to remove those repositories).

In Ubuntu Server, you can find the software sources (text files) in the directory /etc/apt/sources.list.d/. Edit them, and replace focal with jammy.

(This method also works in Ubuntu Desktop)

Archisman Panigrahi
  • 38,814