The bundled 177.80 driver supports this GPU family, but it is possible Apple was given special device ids. According to the text you included the device alias is pci10de,863. Please try:
# update_drv -a -i '"pci10de,863"' nvidia # reboot Just in case there is an issue you can back this change out by rebooting in failsafe mode and tell it to mount the Solaris partition it finds. Then type: # update_drv -b /a -d -i '"pci10de,863"' nvidia # reboot -- This message posted from opensolaris.org