[mythtv-users] MythTV 0.23 audio settings

[Kelly Shutt]

OK, so I took another stab at getting it working this morning and made 
some progress.   I was able to get things working if I force the MythTV 
audio mode to stereo only.  However, I really would like 5.1 to work and 
my receiver support DTS, etc.  Any ideas on getting the 5.1 options to 
work properly?  Even if I turn the upsampling options off completely I 
still get no audio at all when set on 5.1.


Peace,
Kelly

On 3/20/2010 9:55 AM, Kelly Shutt wrote:
> I'm having problems getting HDMI audio working properly.  I have 
> isolated the problem to MythTV at this point, as I can play things 
> outside MythTV and hear the audio fine.  In fact, I can even launch 
> videos from MythVideo and the mplayer instance that spawns has perfect 
> audio.  I just can't get it to work inside MythTV, for playing music 
> and recordings.
>
> I have gone through several guides and forum postings now, even the 
> one on the MythTV wiki:  
> http://www.mythtv.org/wiki/Digital_Audio_Tutorial
> Out of the box my ALSA settings were almost correct.  The system was 
> already seeing appropriate entries in "aplay -l", etc. and I just had 
> to create an appropriate asound.conf file to force things to HDMI as 
> the default.  This is included below.
> I am running the latest updates of Mythbuntu, which gets their trunk 
> version from MythTV 0.23 trunk.  I also noticed that the 0.23 version 
> has different audio settings now, and is completely different from 
> those settings mentioned on the MythTV wiki.  In fact, SPDIF 
> passthrough doesn't even show up in the new version anywhere that I 
> can find.  I have however tried every setting combination I can think 
> of, but MythTV just refuses to use the right audio channel.
>
> Please scroll down for hardware specs, etc.
>
> Peace,
> Kelly
>
>
>
> Zotac IONITX-D-E Motherboard, Chipset MCP7A-ION
>     -  The latest NVidia 190 drivers are installed and recognized the 
> HDMI port out of the box.
>     -  Video is working great over HDMI, I even get BIOS post to the 
> screen.
>     -  As this is a set top machine, in a small case, I use the 
> onboard audio/video and do not have any external cards.
> 4Gb DDR2 Dual Channel RAM
> Intel Atom 330 CPU
> HVR-2250
>
>
> /etc/asound.conf
> pcm.!default {
>        type hw
>        card 0
>        device 3
>    }
> ctl.!default {            //Added per the MythTV wiki, apparently 0.23 
> needs this.
>        type hw
>        card 0
>    }
>
>
> "aplay -l"
> **** List of PLAYBACK Hardware Devices ****
> card 0: NVidia [HDA NVidia], device 0: ALC662 rev1 Analog [ALC662 rev1 
> Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 1: ALC662 rev1 Digital [ALC662 
> rev1 Digital]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
>
>
> "aplay -L"
> front:CARD=NVidia,DEV=0
>     HDA NVidia, ALC662 rev1 Analog
>     Front speakers
> surround40:CARD=NVidia,DEV=0
>     HDA NVidia, ALC662 rev1 Analog
>     4.0 Surround output to Front and Rear speakers
> surround41:CARD=NVidia,DEV=0
>     HDA NVidia, ALC662 rev1 Analog
>     4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=NVidia,DEV=0
>     HDA NVidia, ALC662 rev1 Analog
>     5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=NVidia,DEV=0
>     HDA NVidia, ALC662 rev1 Analog
>     5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> surround71:CARD=NVidia,DEV=0
>     HDA NVidia, ALC662 rev1 Analog
>     7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
> iec958:CARD=NVidia,DEV=0
>     HDA NVidia, ALC662 rev1 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)
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