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As you know, Kubuntu 12.04 came out recently. Since I want to upgrade from 11.10, I followed the instructions on this page. However, after completing the update all packages step and rebooting, I never got a notification letting me upgrade to 12.04. I have tried the update again many times, and I have rebooted after each upgrade, yet I have never gotten this notification.

Any help would be appreciated. Thanks!

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up vote 1 down vote accepted

Open sofware sources. click on Updates tab and then in release upgrade select Normal release release

enter image description here

Thrn enter this into terminal and see what you get
sudo do-release-upgrade -m desktop -f kde -d

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I tried it, and it checked for a new version of Ubuntu, but it couldn't find any. I suppose that explains why the upgrade notification wasn't appearing. I've checked my software sources and found this, but I'm not sure if anything's missing or should be checked... – L.A. Apr 29 '12 at 22:54
edited my ans........... – Ashu Apr 30 '12 at 3:37
if this has solved your problem plz mark it as the right answer – Ashu May 6 '12 at 8:31

At this point, you don't need the -d on do-release-upgrade, because Precise is no longer a development version.

From the terminal, sudo do-release-upgrade should be sufficient.

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protected by Community Apr 29 '12 at 15:03

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