I launched again “dist upgrade” but the “nothing to do” message pop up
many packages to be updated are there,
during upgrade I selected to maintain the old ffmpeg packages coming from VideoLAN repo, may be it is for this?
but the package I maintained was only four not this big quantity
have I to do package update?
…which (as explained many times) means that those updates cannot be cleanly applied; they lead to dependency conflicts. If you try to upgrade them manually, you’ll see something like this: