Ca retourne :
Checking for a new Ubuntu release
Your Ubuntu release is not supported anymore.
For upgrade information, please visit:
http://www.ubuntu.com/releaseendoflife
New release '19.10' available.
Run 'do-release-upgrade' to upgrade to it.
J'ai donc voulu faire "do-release-upgrade", mais ça me met :
Checking for a new Ubuntu release
Your Ubuntu release is not supported anymore.
For upgrade information, please visit:
http://www.ubuntu.com/releaseendoflife
Please install all available updates for your release before upgrading.
Et j'ai vérifié, j'ai bien la version Dingo, et ça explique pas mal de choses