im afraid there is no other way you can use HDMI and DVI at the same time.better buy optical out
It seems the problem is really with the videocard. I have been using the DVI out(connected to a plasma tv using
DVI to HDMI converter) together with the HDMI out(connected to an HK AVR) of my ATI HD5450 with no problem. In fact, the VGA out of my videocard(it has an HDMI, DVI, and VGA out) is also connected to a 19" monitor so that I can conveniently switch between the small monitor and the plasma depending on whether I want to watch movies, listen to music or just surf the net.