http://bugs.winehq.org/show_bug.cgi?id=18074
--- Comment #8 from Ryan Gooler cheetahmorph@gmail.com 2009-04-16 06:51:34 --- Added new glxinfo. A lot changed, but I'm still seeing "Mesa" in there. Xorg configs are definately not my strongest area.
Ubuntu auto-detected these settings after I blew away xorg.conf, so I may still be using a generic driver.