No DVI output on ATI Xpress 200 with ati_drv v6.8.0

[J Jude]

I have an HP DC5750 workstation, with an on-board ATI Xpress 200 video
card.  The card has both DVI and VGA outputs.

I would like to use DVI output with my monitor, but I cannot seem to
get DVI to show on screen, unless VGA is also connected.  In other
words, if I connect both the DVI and VGA outputs to one monitor, then
I can use DVI output.  If I disconnect VGA output, then X seems to use
the DVI output, but the screen is blank.  There are no errors, xrandr
thinks that LVDS output is working, but the screen is blank.

I have attached my xorg.conf file, Xorg.0.log and "xrandr -q" for VGA
disconnected and connected.

I am running Ubuntu Gutsy 7.10, with a git-fresh ati_drv.so and
ati_radeon.so.  fglrx drivers are not installed.

Any ideas on what I am doing wrong?  Do I need to update any other drivers?

Many thanks
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