[Bug 1354825] Re: release upgrades from an LTS with normal set should offer next LTS if next normal release is EoL

[miguelquiros]

I experienced the same problem and, in my case, it seemed to be provoked by a bogus /var/lib/update-manager/meta-release-lts file. It contained what seemed to me an error report page generated by a server (the file looked like a html file with something like "page not available, contact the webmaster").
I think that, at some stage, ubuntu has tried to grab from the web the information that should be  placed in this file and the connection failed by any reason, only garbage was retrieved and garbage was written to the file.
After deleting the file, "do-release-upgrade" worked as expected (and wrote a correct meta-release-lts file). Anyway, I aborted for the moment the upgrade (I will perform it when I have time to face any possible problem: these upgrades always rise some issue to be addressed :-) ).

Good luck.

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https://bugs.launchpad.net/bugs/1354825

Title:
  release upgrades from an LTS with normal set should offer next LTS if
  next normal release is EoL

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Triaged
Status in “update-manager” package in Ubuntu:
  Triaged

Bug description:
  The update-manager tries to update from 12.04 to 12.10 but this seems
  to fail, because it's no longer supported, instead it should update to
  14.04.

  Steps to reproduce:
  1. Buy a dell laptop with ubuntu 12.04 pre-installed
  2. Run sudo do-release-upgrade or update manager gui

  Current result:
   sudo do-release-upgrade
  Checking for a new Ubuntu release
  Err Upgrade tool signature
    404  Not Found [IP: 91.189.92.201 80]
  Err Upgrade tool
    404  Not Found [IP: 91.189.92.201 80]
  Fetched 0 B in 0s (0 B/s)
  WARNING:root:file 'quantal.tar.gz.gpg' missing
  Failed to fetch
  Fetching the upgrade failed. There may be a network problem.

  Expected result:
  Ability to upgrade to either 12.10 -> 13.04 -> 14.04
  or upgrade directly from 12.04 -> 14.04 a direct upgrade path seems better.

  Additonal information of affected system:
  lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 12.04.5 LTS
  Release:	12.04
  Codename:	precise

  Also I am not the only one having this bug, see the following
  stackoverflow question: http://askubuntu.com/questions/504846
  /upgrading-from-12-04-3-lts-to-14-04-1-lts-failure this question
  wasn't posted by me, so this isn't only me.

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