[mythtv-users] HDMI ac3 passthough audio

[Allen Edwards]

On Thu, Feb 12, 2009 at 7:36 AM, Joel Means <means.joel at gmail.com> wrote:
> On Thu, Feb 12, 2009 at 8:11 AM, Joel Means <means.joel at gmail.com> wrote:
>> Just one last update from me.  I updated to ALSA 1.0.19 with no luck.
>> I will also point out that I have tried all of this with and without
>> Pulseaudio installed.  I have a feeling that Abit just screwed up
>> their implementation of this chipset, since it seems to work fine for
>> other people on Asus motherboards.  The sad thing is that I bought
>> this motherboard specifically for the HDMI port and took a long while
>> to decide between Abit and Asus.  In the end, I let ~$20 decide for
>> me.  Oh, well.  Live and Learn.
>> Joel
>>
>
> One other note and questions on this.  I did note that with the
> installation of ALSA 1.0.19, I have an additional entry in the output
> of 'aplay -L' which wasn't there before.  Now, the last three entries
> are:
>
> iec958:CARD=NVidia,DEV=0
>    HDA NVidia, ALC888 Digital
>    IEC958 (S/PDIF) Digital Audio Output
> hdmi:CARD=NVidia,DEV=0
>    HDA NVidia, NVIDIA HDMI
>    HDMI Audio Output
> null
>    Discard all samples (playback) or generate zero samples (capture)
>
> Before, I didn't have the hdmi entry.  I could, however, use "hdmi" as
> an output device for speaker-test or mplayer and get sound over hdmi.
> It just wasn't listed here.  I am wondering if someone who has the
> same ALC888 controller (preferably with the GeForce 7050 chipset) and
> has AC3 passthrough over HDMI working can post their output of 'aplay
> -L'.  The reason I ask is that mine lists iec958 as being a Digital
> Audio Output, but hdmi is only listed as being Audio Output.  I don't
> know if that is relevant or not, but I would be interested in seeing
> what another mobo has to say about it.
> Thanks,
>
> Joel
>

You probably did this but can you post the output of aplay -l and make
sure you have enabled the HDMI output in alsamixer.  I think you
should see 3 digital outputs in alsamixer.  Finally, did you run the
script discussed in the link