Here’s an entertaining possibility: Brian de Alwis, on the port-i386 NetBSD mailing list, noted that he was able to get ATI’s proprietary drivers for XFree86/Xorg working on NetBSD, at least for Xinerama support.   I daresay this would work for DragonFly too – anyone have a recent ATI card to try out?  (Original link from Greg Troxel)