DRI and ati AIW8500DV

[Justin C. Sherrill]

> I don't think so. A much newer version of the drm kernel modules is due
> to be  committed to -STABLE. If you feel like testing it, you can get
> the diff from  http://people.freebsd.org/~anholt/dri/files.html (the
> diff is relative to  /usr/src/sys and you will need to create a few
> directories to make it apply  cleanly).

Aha!  That got me a lot farther.  However, I would bomb out if glx was
enabled.  Everything else would work, including having DRI, strangely. 
Looking at the XFree86 log file found the answer to that new problem:

(II) Loading /usr/X11R6/lib/modules/extensions/libglx.so
(II) Module glx: vendor="NVIDIA Corporation"
        compiled for 4.0.2, module version = 1.0.3203

(This card was an upgrade from a GeForce 2, for which I had installed the
binary driver.)  I probably just need to figure out how to clear that
"wrong" module out, and get the right one.  Probably a reinstall of
XFree86, or something less drastic...