Strange audio problems--OT question

[Basil Chupin]

On 28/12/12 18:19, Doug wrote:
> On 12/28/2012 01:29 AM, Basil Chupin wrote:
> /snip/
>>
>> The next question is: is this sound being generated by the 
>> motherboard's onboard chipset or by a PCI(/E) card? And which of 
>> these is selected/activated in the BIOS (you cannot have both 
>> activated [disclaimer here])?
> /snip/
>
> I would appreciate some more information on this.  This is not related 
> to Ubuntu, altho it affects Linux and XP.
> I have 2 sound decoders (if that's what they should be called) in my 
> system; one on the mobo, and another
> in my GeForce video card with NVidia hardware/software. The video card 
> has an HDMI port, which is connected
> to my TV. In Linux, I can get sound from the mobo with video (via the 
> normal computer video connection from
> the GeForce board.) However, no sound comes out of the TV.  In XP, I 
> can get video on both the local monitor
> and the TV, again, but this time I can only get sound from the TV. 
> Both Linux and XP use NVidia drivers designed
> for the respective systems.
>
> I hope I have described this correctly, since it has been some time 
> since I tried to get it working.
>
> I had a friendly fellow on the PCLOS Forum try to get sound from both 
> devices at the same time, but without success.
>
> Is there something built in to the motherboard, or into the OS or even 
> the BIOS which prevents sound from being
> decoded and output from both devices at the same time?
>
> I really wouldn't care if it worked in only one of the two operating 
> systems, since I want to use it to watch movies or
> delayed TV shows on the TV, but I would like to have the audio on the 
> computer audio also, so as to set things up,
> and so on, at the computer, the TV being in another room.
>
> I would assume that if anyone ever figures out to do this, it will be 
> for the Linux system, since that's open software,
> and XP is not.
>
> If you need to know the technical details:
> Foxconn mobo, G41MXE/G41MXE-K
> BIOS: American Megatrends ver.080015, dtd 10/14/2010
> CPU:Intel Celeron E3400 @ 2.60GHz. (Dual Core)
> On-board video disabled in BIOS.
> Video: GeForce GTX 550 Ti
> Audio--on mobo: Intel N10/ICH 7 Family High Definition Audio Controller
> Audio--on GeForce: GF116 High Definition Audio Controller, from NVidia 
> Corp.
>
> --doug

I have the same nVidia card (the 550 Ti) but output vidoe/sound to only 
one device, the HDMI monitor.

While I do not use a dual output like you do, I do understand that you 
need to configure nVidia driver for it to know that you are using 2 outputs.

In the Kickoff>Applications>Applications there will be *NVIDIA* *Server* 
*Settings* entry. With 2 outputs connected to the card these Settings 
should be able to detect both outputs - make sure that the Settings are 
configured to use both outputs.

When nVidia settings are done, check that pulsaudio also has the correct 
settings for the two outputs.

BC

-- 
Using openSUSE 12.2 x86_64 KDE 4.9.4 & kernel 3.6.10-1 on a system with-
AMD FX 8-core 3.6/4.2GHz processor
16GB PC14900/1866MHz Quad Channel Corsair "Vengeance" RAM
Gigabyte AMD3+ m/board; Gigabyte nVidia GTX550Ti 1GB DDR5 GPU