The release upgrade fails because your /etc/apt/sources.list file is missing an entry for the main section of the Ubuntu archive. You need some lines like this in it:
deb http://archive.ubuntu.com/ubuntu trusty main deb-src http://archive.ubuntu.com/ubuntu trusty main deb http://archive.ubuntu.com/ubuntu trusty-updates main deb-src http://archive.ubuntu.com/ubuntu trusty-updates main ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Incomplete ** Summary changed: - cant upgrade from trusty yo vivid + cant upgrade from trusty to vivid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1507325 Title: cant upgrade from trusty to vivid To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1507325/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
