In my experience, with fresh AMD cards you will have to upgrade both kernel and mesa drivers after a fresh install of Ubuntu. This holds even if you install the

In my experience, with fresh AMD cards you will have to upgrade both kernel and mesa drivers after a fresh install of Ubuntu. This holds even if you install the .10 version. After that things work just fine. Though upgrading kernel was a bit of a ride the time when it wasn't even possible to boot to console with the freshly installed system..