[mythtv-users] Sound Issues, pt 1

[Andrew C. Stadt]

On 13/08/2010 6:01 AM, Nasa wrote:
> Hi people,
>
> I am running myth via svn ( for a good while now ) and updated it last night.  Well, this resulted in me
> losing all sound from any video source (recordedtv, movies, etc).  Given my system uses spdif out to an
> audio receiver, I verified reciever was still on and volume up.  I then used alsamixer to verify the audio
> options weren't muted or something else wacky.  Then I remembered some updates were done to how audio was
> setup, and thus went and checked it out.  Long story short, I discovered that I could only get sound if I set
> it to 'stereo' vs 5.1.  BTW: i'm not using pulseaudio.  Below are some log clips based off of some things I
> tried...  Can anyone clue me in to why I can't get 5.1 audio to work?
>
>
>
> 2010-08-12 20:40:41.391 ALSA: Setting IEC958 status: audio
> 2010-08-12 20:40:41.394 Found ALSA:iec958:CARD=NVidia,DEV=0 (ALSA:iec958:CARD=NVidia,DEV=0
> Device supports up to 5.1 (digital output, AC3,DTS,))
> -------------
>
> 2010-08-12 20:40:52.087 AO: Opening audio device 'iec958:CARD=NVidia,DEV=0' ch 6(2) sr 44100 sf signed 32 bit reenc 0
> 2010-08-12 20:40:52.087 ALSA: Setting IEC958 status: audio
> 2010-08-12 20:40:52.091 Opening ALSA audio device 'iec958:CARD=NVidia,DEV=0'.
> 2010-08-12 20:40:52.091 ALSA: SetParameters(format=10, channels=6, rate=44100, buffer_time=100000, period_time=50000)
> 2010-08-12 20:40:52.091 ALSA, Error: Channels count 6 not available: Invalid argument
> 2010-08-12 20:40:52.091 ALSA, Error: Unable to set ALSA parameters: Invalid argument
> 2010-08-12 20:40:52.091 AudioOutput Error: Aborting reconfigure
> 2010-08-12 20:40:52.091 AudioPlayer: Disabling Audio, reason is: Aborting reconfigure
> ------------------
>
> AO: Sample rate 48000 is supported
> 2010-08-12 20:50:00.091 AO: Killing AudioOutputDSP
> 2010-08-12 20:50:00.091 AO: Original codec was DTS, signed 16 bit, 48 kHz, 6 channels
> 2010-08-12 20:50:00.091 AO: Opening audio device 'default' ch 6(6) sr 48000 sf signed 16 bit reenc 1
> 2010-08-12 20:50:00.091 ALSA: Setting IEC958 status: audio
> 2010-08-12 20:50:00.095 MythSocket(e8bebe8:50): read<- 50 6       131072
> 2010-08-12 20:50:00.095 Read(): reqd=131072, rcvd=131072, rept=131072, error=0
> 2010-08-12 20:50:00.095 Opening ALSA audio device 'default'.
> 2010-08-12 20:50:00.096 MythSocket(e8bebe8:50): write ->  50 50      QUERY_FILETRANSFER 25[]:[]REQUEST_BLOCK[]:[]131072
> 2010-08-12 20:50:00.096 MythSocket(e8bebe8:50): read<- 50 6       131072
> 2010-08-12 20:50:00.096 Read(): reqd=131072, rcvd=131072, rept=131072, error=0
> 2010-08-12 20:50:00.096 ALSA: SetParameters(format=2, channels=6, rate=48000, buffer_time=100000, period_time=50000)
> 2010-08-12 20:50:00.097 ALSA, Error: Channels count 6 not available: Invalid argument
> 2010-08-12 20:50:00.097 ALSA, Error: Unable to set ALSA parameters: Invalid argument
> 2010-08-12 20:50:00.097 AudioOutput Error: Aborting reconfigure
> 2010-08-12 20:50:00.097 AudioPlayer: Disabling Audio, reason is: Aborting reconfigure
> 2010-08-12 20:50:00.097 AO: Killing AudioOutputDSP
>
>
>
> Thanks in advance,
>
> nasa
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>    
As much as I hate the statement, "same thing here" messages, it seems I 
must use it.

I added an HDPVR to my backend yesterday, forcing a rebuild of myth so I 
updated to the latest in 0-23-fixes, which in turn forced an update on 
my frontends.  On my diskless frontend (Zotac ION), I lost all audio.  I 
haven't had the time to start debugging the issue, but I recalled a post 
from someone else regarding an issue with upmixing which I had enabled.

In short, disabling the upmixer gave me sound again.  The wife was going 
to be home shortly so I really didn't have time to look further.

I'll be playing more with it today once the wife is off to work (have to 
keep the WAF up right?).

Cheers,

Andrew.