Wednesday, September 12, 2012 4:59 PM
Here's my setup: Nvidia video card>HDMI out to Sony Home Theater System>HDMI out to Samsung HDTV. I use this to get 5.1 LPCM surround sound for video games. It worked fine until I did a firmware update on the Sony unit. Now, the HDMI audio is greyed out in Windows 7 audio playback options. Nvidia Control Panel sees the device as audio compatible, but Windows does not.
Audio DOES work if I connect a different display (through the same system). I connected an Acer computer monitor and everything worked normally. It also works it I connect it directly to the Samsung TV. The Sony unit works on its own or with the Acer monitor connected. When the monitor is connected, Nvidia Control Panel sees the home theater system as Sony AV System and Audio Playback reports SonyAVSYSTEM. When the Samsung TV is plugged in, Nvidia CP sees the home theater system as Sony Digital Display and Windows audio just says the cable is unplugged (doesn't report anything). I'm getting picture with this setup, but I can't even select the audio option.
I'm going crazy at this point, I have Sony working on it from their end and Samsung insists it's not their fault. Is this a Windows problem? I find it strange that Nvidia CP can recognize the unit and marks it as audio-capable, but Windows says a cable is unplugged. I've tried all recent driver options for both Realtek and Nvidia (Betas and stable). All drivers work the same under different connections described above. That the system works normally unless PC>Theater>TV makes me think that this is a pretty specific breakdown in communication with HDMI. PLEASE HELP ME!!!!
Wednesday, September 12, 2012 9:01 PM
Perhaps the Sony support forum may help.
Thursday, September 13, 2012 5:36 AM
The problem is most likely the drivers, the graphic...Check the manufacturers documentation for the drivers then reboot after all.
Just mark it helpfull it is answered to your problem..
Saturday, September 15, 2012 1:00 AMThat just sends me chasing my tail. Sony's highest level tech support wiped their hands clean. The Sony forums don't have any relevant information to my problem. Nvidia Control Panel registers the device, but Windows does not. This leads me to think that Windows is failing to handshake with the device or something. Remember, the Sony system WORKS when connected to a computer monitor. So... what's going on and how do I change the outcome?
Saturday, September 15, 2012 1:11 AMSorry, but this didn't help me at all.
Tuesday, September 18, 2012 2:13 AMModerator
Please understand that the problem occurs after upgrading the firmware of the Sony unit. Meanwhile, if the system connect to Acer monitor directly, the issue disappears. As a result, I suspect the issue may be more related to Sony’s new firmware. At Microsoft standpoint, we may have the limited resources to troubleshoot this type issue.
Thank you for your understanding and cooperation.
TechNet Community Support
- Marked As Answer by Kim ZhouModerator Saturday, September 29, 2012 1:20 AM