Comment 3 for bug 912999

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug #825777, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

I have had the exactly same issue, and it has been marked as a duplicate of #825777. The Development version LiveCDs work, and somebody is working to issue an update for the current version, Oneiric too.

I personally have solved it the hard way: installed Natty (11.04) and the official AMD drivers and updated to Oneiric (11.10) to have a working Ubuntu computer. I hope this information helps you.