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Discussion Starter · #1 ·
I have this setup:

Windows 7 x64

ATI 5570

Sony 3200 ES receiver

No-name LCD TV.


I have installed ATIs lates 10.11 driver, choosing "typical" install, and realteks latest ATI HDMI audio driver, r2.55. In control panel->Hardware and Sound, the device is flagged as "Not plugged in".


Tried installing kb975538 - no help.


My HDMI cable is evidently plugged in, as I have video working fine. Any ideas why this wont work?


thanks for any help

k
 

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Uninstall the Realtek HDMI driver.

Reinstall the CCC package and this time choose 'Custom Install'.

Check all boxes (there are a couple of items you can leave out, like a game trial and email communication).

Make sure the HDMI driver is selected.

Reboot after install.
 

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Discussion Starter · #3 ·
Thank you, but still a problem. Any other suggestions?


Idea#1 : somehow, the HDMI driver does not see a (compatible) HDMI audio device on the other end. Either because my Sony receiver is LPCM only (no bitstream), or because it is connected via DVI to my tv, somehow back-propagating its lack of audio.


Idea#2 : I have realtek audio integrated on my mobo. Somehow audio drivers are messing each other up.


-k
 

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Does your AVR have the option of sending audio through to the TV?

If so, you need to turn it off.

The audio processing should be done by the AVR and it should stop there. For some reason, audio being forwarded to the TV causes some problems.
 

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Quote:
Originally Posted by knutinh /forum/post/19603260


Thank you, but still a problem. Any other suggestions?


Idea#1 : somehow, the HDMI driver does not see a (compatible) HDMI audio device on the other end. Either because my Sony receiver is LPCM only (no bitstream), or because it is connected via DVI to my tv, somehow back-propagating its lack of audio.


Idea#2 : I have realtek audio integrated on my mobo. Somehow audio drivers are messing each other up.


-k

When you go hdmi to DVI then there will be no audio device for the video card to see. Therefore when you remove the sony receiver and direct connect it will not have audio device. So it seems even when you have sony receiver in the mix it does not see it as an audio device either. I have used sdif from computer motherboard to receiver when TV did not have HDMI port.
 

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Discussion Starter · #8 ·

Quote:
Originally Posted by jstyles /forum/post/19608290


When you go hdmi to DVI then there will be no audio device for the video card to see. Therefore when you remove the sony receiver and direct connect it will not have audio device. So it seems even when you have sony receiver in the mix it does not see it as an audio device either. I have used sdif from computer motherboard to receiver when TV did not have HDMI port.

This is the signal flow:

[PC]-(HDMI)-[Receiver]-(DVI)-[TV]


I would assume that in this case, glorious 8-channel hirez LPCM would flow from the PC to my receiver, while (of course) no audio would flow over DVI to my TV, just like I want to. However, this does not work.


It seems that the Sony receiver is quite quirky with the handshaking, so I have to try out some options. Weird thing, when I disconnect the tv (only PC->Receiver), I still have no sound.


-k
 

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Discussion Starter · #9 ·

Quote:
Originally Posted by hirent /forum/post/19608172


Well, the AVR is a 4 year old model.

One of the first ones with HDMI.

But I bought it specifically to have HDMI audio in (only to find that it took the PC industry many years to implement HDMI audio out in an acceptable form). This only emphasize what I have said before: instead of paying the "Sony tax" buying a receiver every 3 years just to sort out trivial bugs, I would rather have a plain, stupid 8-channel DAC/amplifier with no processing/intelligence/source-switching, and do all processing in my PC.


I dont understand why no-one are willing to make that product, interfaced via firewire, HDMI or whatever.


-k
 

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I was getting no sound from my Onkyo receiver over HDMI because it didn't like the screen resolution -- it wasn't 1080p/i or 720p.


Having a new TV in the mix definitely has screwed up my audio. It makes my PC think the AVR only handles the sound the TV can handle so no more bitstreaming. Maybe the EDID stuff says you have no sound. I think mine is probably and EDID issue.
 

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Discussion Starter · #11 ·
I checked my receiver manual. It was already set to HDMI-audio "amp" (not trying to forward audio to the tv).


Unplugged the TV from the receiver. AMD HDMI output still insists that it is not plugged in.


Updated to latest GPU driver.


-k
 
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