Currently Being ModeratedFeb 20, 2011 4:42 PM (in response to cummr01)Check both your TV's user manual and your receiver's user manual for information about CEC. There may be ways to turn it off, which you might want to do, either in the TV or the receiver, to get around the issue.
Currently Being ModeratedApr 13, 2012 4:27 AM (in response to cummr01)
I have the same issue. Apple just didn't design it right due to their lack of home entertainment knowledge.
I am afraid that the only solution here is to use the toslink audio connection and use that for your audio.
Currently Being ModeratedOct 17, 2012 1:51 AM (in response to cummr01)
I have the same issue with mac mini, yamaha receiver and samsung tv. For me it worked fine using itunes for music without the screen turned on. Last weekend I used plex to watch a movie and since then the sound switches to the internal mac mini speaker when I turn of the tv. No changese where made to the receiver configuration.
Currently Being ModeratedOct 18, 2012 3:36 AM (in response to cummr01)
When the TV is turned off or disconnected from the Mac, or if you are using an AV Receiver also when the AV Receiver is switched to a different source than the Mac, the result is that the Mac no longer sees a signal on the HDMI interface. The Mac will then deactive the HDMI interface and switch the sound back to the built-in speaker.
The best solution involves spending money, and is to buy a Gefen HDMI Detective+. This learns the signal from the TV and will keep sending it to the Mac even if the TV is turned off, unplugged or the AV Receiver switches the connection.
Currently Being ModeratedOct 18, 2012 10:45 PM (in response to John Lockwood)
Why spending money on the detective if you can solve it with a € 1,5 toslink connector?
It is just ignoring that with the Mac Mini you can't fully use the HDMI cable.