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I'm following the upgrade instructions on Ubuntu's website, but on launching the upgrade tool I get this response:

Checking for a new ubuntu release
No new release found

Am I doing something wrong? Is there a workaround?

Here's my /etc/lsb-release:

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3 Answers

According to Ubuntu Engineering Foundations team manager Steve Langasek:

Upgrades between LTS releases are not enabled by default until the first point release, 12.04.1, scheduled for July. It is recommended that most LTS users wait until then before upgrading to 12.04.

If you choose to upgrade before then, you can pass the -d option to the upgrade tool, running do-release-upgrade -d or update-manager -d, to upgrade from vanilla 10.04 to 12.04. (-d stand for devel)

This is what the release notes say:

Upgrades from Ubuntu 10.04 LTS to 12.04 LTS do not work using the alternate CD or the server CD as a package repository. It is recommended that users running Ubuntu 10.04 LTS wait for the 12.04.1 LTS point release, scheduled for July, before upgrading. (988941)

See also:

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I did follow the Ubuntu upgrade page link and it went well during the upgrade process on my three (3) Ubuntu 10.04 servers with no problems. –  Eduardo B. Apr 26 '12 at 19:49
I followed this procedure and it worked, though it did last a few hours. Make sure that you run this in a persistent terminal (e.g. screen) –  Christian Mann Jun 28 '12 at 21:21
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sudo do-release-upgrade -d 

Notice the -d at the end.

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2 options :

  1. Burn the iso and put it in your drive, it will detect the upgrade automatically

  2. Go in you synaptics options, then Preference > distribution > Always prefer the highest version.

Problem solved ?

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Will try this, thanks. :) I feel stupid for not realising that. –  CullenDM Apr 28 '12 at 2:16
10.04 releases won't upgrade right away, see the link I posted above. –  Jorge Castro Apr 28 '12 at 2:18
Thanks for the info! :) –  CullenDM Apr 28 '12 at 3:47
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protected by Community Apr 26 '12 at 20:37

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