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I was using 11.04. I had my update manager set to notify me of LTS releases by ubuntu. So when I tried to upgrade via terminal (by do-release-upgrade), it said no new version was found. So I had to go to update manager via NX viewer and change the setting to notify me of all the releases. Then when I did the 'do-release-upgrade', it started upgrading to 11.10. My questions are :

(1)How could I have changed the version upgrade notification via terminal?

(2) I disabled system upgrade notification unless it was LTS. Should not 'do-release-upgrade' be able to find any new upgrade on its own irrespective of the choice of notification. Thanks.

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From my experience, you cannot upgrade straight from 11.04 to 12.04. You have to upgrade from 11.04 to 11.10 to 12.04. Or at least that is the way I had to do it.

I believe this is what you are looking for:

sudo gedit /etc/update-manager/release-upgrades

Follow the instructions.

Hope this helps,

Leinardo

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