[mythtv-users] The strangest behaviour

[Michael T. Dean]

On 08/01/2009 12:46 PM, Phil Wild wrote:
> 2009/8/1 Phil Bridges:
>   
>> On Sat, Aug 1, 2009 at 10:40 AM, Phil Wild wrote:
>>     
>>> I am trying to determine what has happened to my audio...
>>>
>>> Everything has been working fine for months, but now, all of a sudden,
>>> audio is playing up.
>>>
>>> Audio on standard definition transmission live TV and recordings are
>>> fine. Anything that is high definition does not work.
>>> Well, about 95% of the time there is nothing and then I get about a
>>> second of audio before nothing again.
>>>
>>> I am connected using SP-DIF between mythfrontend and hi-fi receiver.
>>>
>>> If I look at the optical cable, I can see the red light so it is transmitting.
>>>
>>>
>>> Has anyone seen this type of behaviour before?
>>>
>>> Anyone suggestions on how to further debug this would be great...
>> Do you have the "Extra Audio Buffering" turned on?  This same thing
>> recently happened to me.
> Yes I do,
>
> I just tried turning it off though and it has made no difference....
>   

You /want/ it on.  You had it right before.

> I have just ripped my system apart and switched to my original inbuilt
> hdmi video port and piped the audio through it. I get exactly the same
> result so the problem is not the actual SP-DIF port. I guess it could
> be my motherboard...
>
> Any other suggestions?

I'll bet you recently enabled AC-3 passthrough.  Either configure it or 
disable it (and DTS passthrough).

Mike