Possible Duplicate:
Update manager doesn't offer an upgrade from 11.10 to 12.04

I am very exited about the releases and i do want to try to install it , but I can't see it , when I do launch update manager, there is no update available , the option about notifying me is ticket in the option . But no chance ! Any idea why ?

Plus i can read that a lot of people is having many problems during the upgrade , do you have any idea why?

I did not done any customisation about linux , but a lot of software are installed and I do not want to install again

marked as duplicate by TheXed, jrg Apr 29 '12 at 18:42

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • i am using 11.04 version. thanks – florent Apr 26 '12 at 23:30
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    If you are on 11.04 you have to first upgrade to 11.10 before upgrading to 12.04. Please see this Q&A explaining how to do this. askubuntu.com/questions/64885/… – fossfreedom Apr 27 '12 at 15:49