apt – What can I do if a repository/PPA does not have a Release file?

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The PPA you’ve added does not support your version of Ubuntu, meaning there aren’t any packages for your particular release.

For example, the ppa:mc3man/trusty-media PPA is only for Trusty (Ubuntu 14.04) only (trusty-media). Obviously, it has no files for Xenial (16.04). You can check the PPA’s Launchpad page to see which versions of Ubuntu are supported.

I’d suggest the following:

  • Remove the PPA for an older release. For this example:
    sudo ppa-purge ppa:mc3man/trusty-media
  • If there’s a PPA for your curent release, add it. In this case, there’s a PPA for Xenial: mc3man/xerus-media. You can add it using
    sudo add-apt-repository ppa:mc3man/xerus-media

To summarize, you need to remove the added PPA, and use another one that has packages for your particular release.

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