How do I keep the audio playing over an HDMI cable while the connected display is off in Windows 7?

Question

I have the following signal chain over HDMI: PC -> Onkyo TX-SR608 -> TV. When I turn the TV off, the audio signal gets killed as well. Assuming this is a Windows issue...

How do I tell Windows to keep sending audio over HDMI when the video display on the other end is off?

Answer 1

Haven't tried it couse my TV is only display in my system, but you can try this:

• turn the TV off
• detect displays in CCC (hope HDMI audio will see AVR)
• check sound out

Answer 2

I had exactly the same problem, and found a solution that works for my ATI 4850 graphics card.

In Catalyst Control Center I've checked the "Force TV detect" checkbox. Now if I turn off the TV sound goes off for a few seconds, and then comes back again. It isn't ideal, but it works.