Xbox 360 – HDMI Audio Problems
December 21st, 2009
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I had an issue the first time I turned on my new Xbox 360 where I was unable to get audio working via HDMI. After many hours of experimentation I discovered that if you go into the Display settings there is an option called “Display Discovery” which is turned on by default. If you’re running your Xbox through an Audio Receiver or similar device it appears that the auto discovery mechanism built in to the Xbox occasionally results in Xbox being set to “DVI Mode” i.e. video only.
The way to resolve this problem is to just turn”Display Discovery” off and restart the Xbox.