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To use the drivers, make a copy of %%PREFIX%%/etc/rc.d/drm.sh.sample under 
%%PREFIX%%/etc/rc.d/drm.sh.

To load the drivers run (as root):

# %%PREFIX%%/etc/rc.d/drm.sh start

To unload it:

# %%PREFIX%%/etc/rc.d/drm.sh stop

It'll also load the drivers automatically when the system is started.
Alternatively, you could add %%PREFIX%%/lib/drm to your kern.module_path sysctl
and let XFree86 load the drivers for you.

Once the modules are loaded, check http://gladstone.uoregon.edu/~eanholt/dri/
for more information on how to set up the DRI.

Please report problems to Eric Anholt <eanholt@gladstone.uoregon.edu>.
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