Activate DVI Output on a Radeon X800 - how does that work?

Hi there

i am having a little trouble with a G5 Dual with a Radeon X800 Card. In order to be able to output my signal to a DVI Fiberoptik Line i need to output digital DVI from my Cat.

Unfortunatelly the Machine only outputs a analoge signal with a DVI to VGA Converter attached to the second Output. When i connect a DVI Monitor directely with a DVI cable there is no output.

In the manual of the card i could find that it should be outputting digital DVI signal. In the ATI System Panel i could not find anything saying that digital DVI output is disabled.

Anybody got a good idea what that could be? Any help would be appreciated

Thanks a lot

Thomas :-)

faulty cables?

faulty monitor?

there is nothing in software to enable this.

it has always been automatic.