I upgraded from 13.04 to 14.04 with downloaded updates no CD. It looks like I now need the APT line for update repositories for 14.04 LTS. This is what is says when I try to update/reload information about installed software. And I do have a working internet connection.
The information about available software is out-of-date To install software and updates from newly added or changed sources, you have to reload the information about available software. You need a working Internet connection to continue. W:Failed to fetch cdrom://Ubuntu 13.04 _Raring Ringtail_ - Release i386 (20130424)/dists/raring/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs, E:Some index files failed to download. They have been ignored, or old ones used instead.
Enter the complete APT line of the repository that you want to add as source. The APT line includes the type, location and components of a repository, for example 'deb http://archive.ubuntu.com/ubuntu trusty main'