New X test: blank with 6970 and two DVI monitors.

[Zaphod Beeblebrox]

I was excited to finally try and get X onto the console of my workstation.
For various reasons, I have an i7 with a 6970 graphics card, and this
configuration has been lonely.

I've put copies of the relevant txt output @
https://uk.eicat.ca/owncloud/public.php?service=files&t=4fe892d7049037bb549ab88a0c217069

In summary, Both monitors were blank.  I made sure that DVI-0 was
"Monitor0" and much of the other output seemed sane, but the screen was
still black (not the regular X pattern) and starting xdm didn't show
anything.