Ubuntu – Can’t install vlc and other software : packages not coming from authenticated sources


After installing Ubuntu 11.10 last week I couldn't install any mp3 or videoplayers such as vlc or any others. They show me something about a failure to install packages, and when I click on details I see this:

The action would require the installation of packages from not authenticated sources: libdvdread4 libvlc5 libvlccore4 vlc vlc-data vlc-nox vlc-plugin-notify vlc-plugin-pulse

Best Answer

You need to ensure your software sources are enabled for Restricted Extras and Multiverse.

Open the Software Centre from Unity then select Edit -> Software Sources.

In the dialogue box that opens ensure you have the following selected;

Software Sources

Once this is done close the box and search for VLC in the Software Centre, you will then be able to install it.