On Tuesday 16 March 2010 14:32, Dan Armbrust wrote:

On Mon, Mar 15, 2010 at 9:11 AM, Dan Armbrust

daniel.armbrust.list@gmail.com wrote:

...

Hi,

I'm trying to configure a mythtv box to send sound to my spdif port AND my analog stereo speakers.

In order to make the spdif port work, I found I needed this in /etc/asound.conf:

#---- pcm.!default {    type plug    slave.pcm "spdif"  }

#----

I thought maybe this would work to send the sound to both....

#---- pcm.!default {    type plug    slave.pcm "front"    slave.pcm "spdif"  } #----

But that was a little naive... apparently.  The sound just goes to whichever item I put last.

I know right next to nothing about writing alsa config files... and every example I find is very large, very complicated looking, and doesn't do what I want.

Can someone tell me how to configure alsa for this?

What I want - exactly - Sound to always go to both the "front" (my 2 channel stereo speakers), and my spdif output, with anywhere between 1 and 5.1 channels... depending on what my source audio has.  I also want mythtv to pass the full 5.1 channels from HD to the spdif port, while sending the stereo sound to the analog.

Some info:

# aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC888 Analog [ALC888 Analog]  Subdevices: 1/1  Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 1: ALC888 Digital [ALC888 Digital]  Subdevices: 0/1  Subdevice #0: subdevice #0

#aplay -L front:CARD=Intel,DEV=0   HDA Intel, ALC888 Analog   Front speakers surround40:CARD=Intel,DEV=0   HDA Intel, ALC888 Analog   4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0   HDA Intel, ALC888 Analog   4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0   HDA Intel, ALC888 Analog   5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0   HDA Intel, ALC888 Analog   5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0   HDA Intel, ALC888 Analog   7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Intel,DEV=0   HDA Intel, ALC888 Digital   IEC958 (S/PDIF) Digital Audio Output null   Discard all samples (playback) or generate zero samples (capture)

Thanks!

Dan

Hello?

Is this really a hard thing that I'm asking to do? No one can help me configure alsa?

Thanks,

Dan

In case you haven't found these docs, they may help:

http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html

Alan