> So the module didn't successfully probe your video chip. This can have
> several reasons. Please download this:
> ftp://ftp.netbsd.org/pub/NetBSD/misc/macallan/macppc/ 
> ati_driver_xf44.tar.bz2
> it contains the ati driver modules, put them into
> /usr/X11R6/lib/modules/drivers/ and see if that makes any difference.
> ( you may want to backup the old ones first, even if things don't work
> properly )

It doesn't make any difference. The only different line in the log,  
other than the date, is

(previous):
(II) ATI: ATI driver (version 6.5.6) for chipsets: ati, ativga

(this):
(II) ATI: ATI driver (version 6.5.6) for chipset: ati