Ubuntu – Switch from normal to LTS release

12.04lts

We started with an Ubuntu 11.10 for a server system. The upgrade to 12.04 went smoothly. Now I only want to upgrade to the next LTS release. However, the system keeps telling me that 12.10 is available. Although this is true, I want to stick to LTS from now on.

How do I switch the release-"mode"?

I want the system to act like I installed it from an LTS-image.

UPDATE

After logging into the system I am greeted by

Welcome to Ubuntu 12.04.4 LTS (GNU/Linux 3.2.0-63-generic x86_64)

 * Documentation:  https://help.ubuntu.com/
New release '12.10' available.
Run 'do-release-upgrade' to upgrade to it.

The file /etc/update-manager/release-upgrades has Prompt=lts configured.

Best Answer

OK, I was reading another answer, and it had this:

Upgrades between LTS releases are not enabled by default until the first point release, 12.04.1/14.04.1, scheduled for July/August. It is recommended that most LTS users wait until then before upgrading to 12.04/14.04.

Ubuntu 14.04.1 is scheduled for July 24th.

Hope that explains why you don't get the 14.04 prompt.

PS: As you guys don't seem to like my duplicate suggestions, I humbly concede, and post this as a possible answer.

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