[ubuntu] Is the correct driver being used?

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http://ubuntuforums.org – How might I confirm which driver is being used for my graphics card? I've recently been having some graphics trouble with Wine, and, in attempting to resolve it, I realised that I don't actually have confirmation that the graphics driver that I intend to be in use is actually the one being loaded. The intended driver should be installed, but I'm not confident that it's actually being used instead of the driver that comes with Ubuntu. I have both Ubuntu 11.10 and 12.04 loaded, so solutions for either (or, better yet, both) are welcome. My system: Gigabyte Q2005 (A netbook) CPU: Intel Atom N (Hardware)