[Bug 1609796] Re: cant upgrade EOL 15.04

[Brian Murray]

ubuntu-release-upgrade includes configuration files regarding the
releases for which it supports upgrading from and to.  Currently, there
is support for upgrading from 14.04 to 16.04 and 15.10 to 16.04.  We
could add support for upgrading from 14.10 and 15.04 to 16.04.

** Package changed: update-manager-core (Ubuntu) => ubuntu-release-
upgrader (Ubuntu)

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https://bugs.launchpad.net/bugs/1609796

Title:
  cant upgrade EOL 15.04

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  A user in #ubuntu complained about no beeing able to upgrade his EOL
  15.04 (cloud) server install, so i made a 15.04 server install in vbox
  to test this scenario, and he is right:

  Running "sudo do-release-upgrade" results in: 
  "An upgrade from 'vivid' to 'xenial' is not supported with this tool."

  An EOL Upgrade with changing the sources.list to use the old-releases
  doesnt work since vivid is not moved to the old-releases yet: http
  ://old-releases.ubuntu.com/ubuntu/dists/ .

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