On 01/25/2010 03:14 PM, Ed Greshko wrote:
> Marcel Rieux wrote:
>
>> On Mon, Jan 25, 2010 at 4:30 AM, Ed Greshko<Ed.Greshko@xxxxxxxxxxx> wrote:
>>
>>
>>> Bill Davidsen wrote:
>>>
>>>
>>>> Marcel Rieux wrote:
>>>>
>>>>
>>>>
>>>>> Since the NVIDIA forums are just a lost of time, I'll first ask the
>>>>> question here.
>>>>>
>>>>> I have an NVIDIA 9400GT card and a Sony LCD TV linked with an HDMI cable.
>>>>>
>>>>> First problem I found: the S/PDIF cable -- which is needed only with
>>>>> NVIDIA cards -- wasn't installed. The plug had a molding problem and
>>>>> one of the 4 holes was blocked. (The hole was just empty: no wire
>>>>> going to it.) I opened it with a pin, installed it with the arrow
>>>>> facing the closest part of the motherboard, reversed it, and, of
>>>>> course, sound doesn't come out of the TV. It's an Nvidia product!
>>>>>
>>>>> Anybody got this working?
>>>>>
>>>>>
>>>>>
>>>> Did you get PulseAudio to send output to the connector? Many times this is a PA
>>>> config issue.
>>>>
>>>>
>>>>
>>>>
>>> That is actually a very good question....
>>>
>>> Everything I would find out about ASUS Nvidia 9400GT based cards
>>> (assuming this is an actual card) is that the spdif cable is simply a
>>> pass though. One connects the spdif cable from the graphics card to
>>> either a sound card connector or motherboard connector (depending on
>>> your system and its configuration) and sound is simply passed through to
>>> the HDMI.
>>>
>>>
>> That's how it's *supposed* to work.
>>
>>
> Since you now appear to know how it is supposed to work....I wonder why
> you were bitching about Nvidia and the drivers. The product is not a
> Nvidia product...but an Asus product.
>
> We also don't have enough information on the card itself. Nor do we
> have any information on what your sound system is or where you've
> connected the spdif cable. You've said that one of the cables holes was
> blocked....but many times that is quite normal. That could be the "key
> hole" that would prevent one from installing cable in the wrong
> orientation. It is more than likely a "key hole" since you state there
> is no wire going to it. So, I would even question if you have the cable
> installed correctly or even to the correct pin block on your system.
>
>>
>>
>>> So, one needs to ensure the output is configured correctly.
>>>
>>>
>> The only relevant configuration I see for sound is under the hardware
>> tab. Anything analog gives an output on the computer, anything digital
>> gives no output. In both cases, there is no output on the TV.
>>
>>
>
>
There are several things at work here:
1: aplay --list-devices
If only the onboard sound devices show up, then:
A: You are not connected correctly (hardware) -- recheck the wiring.
B: That card does NOT do audio out via HDMI -- recheck card
specifications.
2: You may need to use alsamixer to force pulseaudio to use the right card:
A alsamixer -C N (where N == card number from aplay listing)
B: make sure nothing is muted in alsamixer
C: alsactl store N (where N == card number)
D: Check the GNOME audio again and set as appropriate
Some TVs will allow a mix of HDMI in on one channel and audio in on
another channel, just for this type of situation where the source cannot
do audio over HDMI. My son has a TV like that.
Good Luck!
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