[ubuntu] Screen displays "AMD Unsupported Hardware"

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http://ubuntuforums.org – After installation, I saw "Additional Drivers" Under Hardware. I have a AMD 7750 video card, which I understand is supported by Ubuntu native drivers, so I assumed these drivers were for my card. (See http://www.theinquirer.net/inquirer/...n-islands-gpus and http://www.anandtech.com/show/5541/a...dition-review/) My screen now displays "AMD Unsupported Hardware"in the lower right corner. How do I : 1) Get this off my screen? 2) Get the right drivers? Thanks! (Hardware)