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Felix Buenemann Level 1 Level 1

did any one have any luck getting HDMI Audio to work with the Radeon HD 5870 Graphics Upgrade Kit on an older Mac Pro?

I'm using a Mac Pro early 2009 (MacPro4,1) 8-core 16GB running Snow Leopard 10.6.6 64-Bit kernel and tried to connect the HD 5870 via Hama Mini-DP to HDMI to either an Eizo HD2441W LCD or Yamaha RX-V765 Receiver with connected Panasonic PT-AE4000 Projector.

After I installed the card, HDMI audio worked once, and I had an entry Panasonic AE-4000 under audio devices in system settings. But now no matter what I try, no HDMI audio is listed from either system settings or system profiler.

I tried a fresh Install to an empty USB drive with 10.6.0 -> 10.6.4, 10.6.5. 10.6.6 and could not get HDMI audio to show up once. I tried resetting SMC and PRAM/NVRAM to no avail.

The same adapter is working fine under Windows 7 x64 using Bootcamp on my Mac Pro aswell as under Snow Leopard 10.6.6 64-Bit on my Mac Book Pro 17" 2010.

*Does anyone have HDMI audio working with a non-2010 Mac Pro and what brand/model of Mini-DP to HDMI adapter are you using?*

Mac Pro 2009, Macbook Pro 17" 2010, Mac OS X (10.6.6)
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