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Running Windows Vista and Ubuntu 11.04 on an Acer tower. Was running 10.10 with kernel, running great. Upgraded to 11.04 from Update Manager, re-boot results in Input Not Supported error, then a short delay, then 11.04 boots, but without GRUB menu. I would like to get to version 12.04, but am afraid to continue until I get 11.04 running error-less.

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try to reinstall your grub with this tutorial:


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While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. – Mitch Aug 27 '12 at 7:22

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