<br><br><div class="gmail_quote">On Wed, Jun 13, 2012 at 1:43 PM, jr <span dir="ltr"><<a href="mailto:jraymyth@gmail.com" target="_blank">jraymyth@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On Tue, Jun 12, 2012 at 11:03 PM, Igor Cicimov <<a href="mailto:icicimov@gmail.com">icicimov@gmail.com</a>> wrote:<br>
> Did you try with "ALSA:hdmi:CARD=NVidia,DEV=3" or DEV=7 in the audio setup?<br>
> Sorry fot top post im typing this on my phone. If not available as selection<br>
> i think you can manually edit it.<br>
><br>
<br>
</div>Hmmm. This is confusing. Using 7 in that line resulted in a no<br>
device found error. But it got me wondering, so I went thru all of my<br>
listed devices with DEV=7, and found one that works.<br>
<br>
ALSA:dmix:CARD=NVidia,DEV=7<br>
<br>
This is good, but I dont understand why the HDMI line does not.<br>
<br>
I have an<br>
ALSA:hdmi:CARD=NVidia,DEV=0<br>
ALSA:hdmi:CARD=NVidia,DEV=1*<br>
ALSA:hdmi:CARD=NVidia,DEV=2<br>
ALSA:hdmi:CARD=NVidia,DEV=3<br>
<br>
*A connection is found by MythTV. Clicking "Test" yields the test<br>
hiss in alternating speakers. No sound when playing a recording.<br>
<br>
Also:<br>
ALSA:hw:CARD=NVidia,DEV=3<br>
ALSA:hw:CARD=NVidia,DEV=7**<br>
ALSA:hw:CARD=NVidia,DEV=8<br>
ALSA:hw:CARD=NVidia,DEV=9<br>
**A connection is found by MythTV. Clicking "Test" yields the test<br>
hiss in alternating speakers. I hear a fast fluttering sound when<br>
playing a recording.<br>
<br>
Also:<br>
ALSA:plughw:CARD=NVidia,DEV=3<br>
ALSA:plughw:CARD=NVidia,DEV=7**<br>
ALSA:plughw:CARD=NVidia,DEV=8<br>
ALSA:plughw:CARD=NVidia,DEV=9<br>
**A connection is found by MythTV. Clicking "Test" yields the test<br>
hiss in alternating speakers. I hear a fast fluttering sound when<br>
playing a recording.<br>
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</div></div></blockquote></div><br><div>Yep now that you mentioned it I remembered, the HDMI option was not working for me too. I think has something to do with the channels, format and sampling rate which needs to be 48KHz for the digital output (I think). That's why you need to choose the software mixing plugin device and not the hardware device it self. Then the dmix plugin probably uses the hardware device as slave PCM.</div>
<div><br></div><div>So it goes something like this:</div><div><br></div><div># This is the DMIX device you chose and it uses a PCM slave called here "digital-hdmi"</div><div><div>pcm.dmix {</div><div> type dmix</div>
<div> ipc_key 1235</div><div> slave {</div><div> pcm "digital-hdmi"</div><div> period_time 0</div><div> period_size 1024</div><div> buffer_size 4096</div><div> rate 48000</div><div> } </div><div>
}</div></div><div><br></div><div># This is the hardware device it self, Nvidia HDMI, which is card=1,device=7 in your case</div><div># and is being used in the above dmix device as slave</div><div><div>pcm.digital-hdmi {</div>
<div> type hw</div><div> card 1</div><div> device 7</div><div>}</div></div><div><br></div><div><br></div><div>Please note that this is from my understanding of how ALSA works :) It's little bit complicated and I'm sure you can get much better explanation from some of the audio experts here like Jean-Yves. I would also appreciate if they correct me if I'm wrong so we both learn something too :)</div>
<div><br></div><div>Igor</div>