No updates for 4 months on Ubuntu 20.04 LTS

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Answer: 1

10 hours ago

I have been away for 4 months and when I started Ubuntu again there were 0 updates available. That seems very odd to me. I tried several times and always got that the same result: packages are all up to date. How can that be? Any suggestions?

Ubuntu 20.04.3 LTS - 64-bit - Gnome Version 3.36.8

$ sudo apt update
OK:1 http://archive.ubuntu.com/ubuntu focal InRelease
OK:2 http://archive.canonical.com/ubuntu focal InRelease               
OK:3 https://deb.opera.com/opera-stable stable InRelease               
Paketlisten werden gelesen... Fertig           
Abhängigkeitsbaum wird aufgebaut.       
Statusinformationen werden eingelesen.... Fertig
Alle Pakete sind aktuell.
Added by: Lesly Crooks

Answer: 2

28 hours ago

Seems like an issue with the repositories. Check if your mirror is up to date. Then follow these steps:

  1. Open Software and Updates app.

    sudo software-properties-gtk
    
  2. As you want ALL the upgrades, I recommend enabling ALL the repositories:

    Enable all repositories.

  3. Then change the mirror to "Main Server".

  4. Update:

    sudo apt update 
    
  5. Then upgrade:

    sudo apt upgrade
    

Here is a one line copy-paste friendly command for the above steps:

sudo mkdir ~/answer && cd ~/answer/ && sudo wget https://gist.githubusercontent.com/ishad0w/788555191c7037e249a439542c53e170/raw/3822ba49241e6fd851ca1c1cbcc4d7e87382f484/sources.list && sudo sed -i "s/focal/$(lsb_release -c -s)/" ~/answer/sources.list && sudo mv ~/answer/sources.list /etc/apt/ && sudo apt update && sudo apt upgrade  && sudo rm -rf ~/answer

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