I had just purchased R9 280X and now am having issues with my Sony Receiver being able to be recognized at all times, where when using Nvidia's GTX 560 Ti, I never had this issue.
I run Windows 7 Ult 64bit
13.11 Beta9.4 Driver.
My Sony TV is running to the Sony AVR (receiver) and from there I run hdmi cable to the Display port of my R9 280X (via adapter).
As well as I run primary Samsung monitor via HDMI to R9 280X DVI port.
Now the problem this - If my TV and Receiver are on, and I am turning on the PC after, everything seems to be working properly. I am able to extend displays to Sony TV, and choose audio playback device as 5.1 Sony AVR.
But, if my PC is on first and THEN I turn on TV and Receiver - I am able to go to CCC and detect the TV and extend the displays BUT, the HDMI Play back option via Sony AVR is grayed out in Audio options only leaving me with PC HD audio. This forces me to restart my PC every time i want to turn on the TV, in order for sound to appear.
Further more, sometimes I get the issue, where when I click on Playback devices in sound options it will not open at all... i guess some soft conflict.
If anyone heard of this please let me know.