[mythtv-users] Dolby Digital Signal indicator on Receiver(SOLVED)

[Bob Sully]

>Update - Problem Solved
>
>While checking out the "Configuring Digital Sound" page I looked at the
>section called "Bit Perfect Audio" and used the following settings in
>conjunction with Bas' recommendation:
>On Mythfrontend Utilities/Setup->Setup-General
>go to the Audio page and set your audio device as

>Audio output device = ALSA:cards.pcm.iec958
>Passthrough outputdevice = Alsa:iec958:{AES0 0x02}
>Enable AC3 to SPDIF passthrough check
>Enable DTS to SPDIF passthrough check
>Now everything works fine.
>I mentioned earlier that I thought I would have to convert the sampling
>rate for the recordings and music but then realized after reading "ALSA
by >default will upsample all of your audio to 48Khz" on the website,
that the >sample rate conversion was not my problem. Setting the above
parameters was >the solution.

>I went ahead and added the iecset command to rc.local to make sure it
gets >set whenever the system starts up:

>/etc/rc.local

>iecset audio 0


Dex:

I'm having the same problem.  I have looked at your solution (and the link
you gave), but I still need to toggle the "iecset audio" parameter
manually.  With it at 0, I get full 5.1 sound with HDTV programs and
movies (I'm still trying to tweak my DVD settings, as I'm using Xine as
the DVD player).  However, I can't play music (Mythmusic or Amarok) or get
audio from my STB or analog tuners (pcHDTV 5500) unless I set it back to
1.

Here are my settings:

Audio output device = /dev/adsp
Passthrough outputdevice = Alsa:iec958:{AES0 0x02}
Enable AC3 to SPDIF passthrough check
Enable DTS to SPDIF passthrough check

For the output device, "dev/adsp" is the only one that works. 
"Cards.pcm.iec958" doesn't exist on my system.  Aplay -L gives me:

[root at vader: ~]$ aplay -L
front:CARD=Intel,DEV=0
    HDA Intel, AD198x Analog
    Front speakers
surround40:CARD=Intel,DEV=0
    HDA Intel, AD198x Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
    HDA Intel, AD198x Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
    HDA Intel, AD198x Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
    HDA Intel, AD198x Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
    HDA Intel, AD198x Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
null
    Discard all samples (playback) or generate zero samples (capture)

and aplay -l gives me:

[root at vader: ~]$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: AD198x Digital [AD198x Digital]
  Subdevices: 0/1
  Subdevice #0: subdevice #0


So...could you (or anyone) give me a clue as to what my settings should be
to send everything through the S/PDIF port?

Thanks!
Bob
-- 
________________________________________
Bob Sully - Simi Valley, California, USA
http://www.malibyte.net
http://www.malibyte.com