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Windows 7: HDMI audio problem when connecting LCD TV to PC via HDMI

13 Jun 2010   #1
pjuegos

windows 7 professional 64 bits
 
 
HDMI audio problem when connecting LCD TV to PC via HDMI

hi all,

I have my media center PC connected to a Sansung LCD TV through an HDMI cable.
Everything works fine; the PC detects TV and both audio and video travel through the HDMI cable from PC to TV

The problem happens when I turn the TV OFF and ON. In this case, the video is back but not the audio. This can be seen in the "playback audio devices" in "control panel", the icon that represennts the sansung speakers via HDMI dissapears.
Any idea of what to do? I got the latest video driver, which also deals with HDMI audio but no luck at all...

thanks


My System SpecsSystem Spec
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13 Jun 2010   #2
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

This is more of a HDMI handshaking issue than a Windows or driver issue, and a very common occurrence. Sadly if you do a Google search using "hdmi handshake no audio" for the search terms, you'll get lots of results but very little in the way of how to solve. About the best solution I came across is this one,

*Official* Asus Xonar HDAV1.3 thread - Page 271 - AVS Forum

A lot of that thread deals with the Asus Xonar sound cards, but there is also quite a bit about the no audio in general.
My System SpecsSystem Spec
13 Jun 2010   #3
Aphelion

Windows 7 Home Premium
 
 

Is HDMI Audio listed separately in Device Manager?

If it is, perhaps disabling and re-enabling would force a re-connect.

If it's supposed to be showing up in DM but isn't, might "Scan For Hardware Changes" force a re-connect.

Ap
My System SpecsSystem Spec
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13 Jun 2010   #4
pjuegos

windows 7 professional 64 bits
 
 

Yes, HDMI audio listed separately in dev manager. It is always present in the DM regardless of whether the HJDMI audio is gone or not.

This problem is quite painful because each time I turned off the TV I have to restart the PC in order to get audio through HDMI in the TV. The off state of my media center PC is sleep mode, but waking up from this mode does not awake HDMI audio...

stormy13, you are right, I shy google search shows how annoyingly common the HDMIU handshaking problem is
My System SpecsSystem Spec
14 Jun 2010   #5
Aphelion

Windows 7 Home Premium
 
 

Quote   Quote: Originally Posted by pjuegos View Post
Yes, HDMI audio listed separately in dev manager. It is always present in the DM regardless of whether the HJDMI audio is gone or not.

This problem is quite painful because each time I turned off the TV I have to restart the PC in order to get audio through HDMI in the TV. The off state of my media center PC is sleep mode, but waking up from this mode does not awake HDMI audio...

stormy13, you are right, I shy google search shows how annoyingly common the HDMIU handshaking problem is

Even though it's probably been tried before, disable HDMI in device manager, then re-enable, (with the TV on) that works for clearing up some audio problems.

Ap
My System SpecsSystem Spec
14 Jun 2010   #6
pjuegos

windows 7 professional 64 bits
 
 

I tried that Aphelion, and I got a blue screen crash . I tried it again and the same thing happened.
Something is going really wrong with the HDMI audio

cheers
My System SpecsSystem Spec
14 Jun 2010   #7
Aphelion

Windows 7 Home Premium
 
 

Quote   Quote: Originally Posted by pjuegos View Post
I tried that Aphelion, and I got a blue screen crash . I tried it again and the same thing happened.
Something is going really wrong with the HDMI audio

cheers

Yikes! I didn't expect that, sorry about that. What a shame, having to reboot.

Ap
My System SpecsSystem Spec
14 Jun 2010   #8
pjuegos

windows 7 professional 64 bits
 
 

no, it was actually a good thing to try.
Now we can confirm that audio HDMI is just not stable at all in my PC, and apparently in many other PCs also

It was a good idea
My System SpecsSystem Spec
14 Jun 2010   #9
fishnbanjo

Vista 64 Ultimate, Windows 7 64 Ultimate, Ubuntu 9.10
 
 

I was wondering if you are using your HDMI for both audio and video?
I have an appointment I must get to but will look for your reply upon my return, I may have some information for you. Regards.....
My System SpecsSystem Spec
14 Jun 2010   #10
pjuegos

windows 7 professional 64 bits
 
 

Thanks fishnbanjo,

Yes, I use it for both and that is the problem.
When I start the PC with LCD TV connected via HDMI, both audio and video work great.
Whenever I turn OFF an ON the TV, the audio is gone but the video stays

cheers
My System SpecsSystem Spec
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 HDMI audio problem when connecting LCD TV to PC via HDMI




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