Impossible to upgrade from 12.04 LTS to 14.04 LTS

Bug #1578823 reported by AlainKnaff on 2016-05-05
This bug affects 1 person
Affects Status Importance Assigned to Milestone
update-manager (Ubuntu)

Bug Description

Just tried to upgrade a 12.04 installation to 14.04 using do-release-upgrade

do-release-upgrade just says "No new release found"

According to, 12.04 is still supposed to be supported until April 2017, so don't tell me I'm way too late to upgrade.

root@lll:~# lsb_release -rd
Description: Ubuntu 12.04.5 LTS
Release: 12.04
root@lll:~# apt-cache policy update-manager-core
  Installed: 1:
  Candidate: 1:
  Version table:
 *** 1: 0
        500 precise-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1: 0
        500 precise-security/main amd64 Packages
     1:0.156.14 0
        500 precise/main amd64 Packages

What you expected to happen:
- Until April 2017 (at least), it should still be possible to upgrade from 12.04 to 14.04

What happened instead
- do-release-upgrade tells me No new release found

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