[mythtv-users] hauppauge hvr-1800 very low volume

[Alen Edwards]

genius9976 at yahoo.com wrote:
> Using those settings I get no sound, and mythfrontend outputs this:
> 
> 2008-07-07 10:53:26.343 TV: Attempting to change from None to 
> WatchingPreRecorded
> 2008-07-07 10:53:26.443 DPMS Deactivated
> 2008-07-07 10:53:28.753 Opening audio device 'spdif'. ch 6(2) sr 48000
> 2008-07-07 10:53:28.754 Opening ALSA audio device 'spdif'.
> 2008-07-07 10:53:28.756 AudioOutput Error: Channels count (6) not 
> available: Invalid argument
> 2008-07-07 10:53:28.756 AudioOutput Error: Unable to set ALSA parameters
> 2008-07-07 10:53:28.758 NVP: Disabling Audio, reason is: Unable to set 
> ALSA parameters
> 
> 
> running the commands you suggested produces the following:
> 
> [root at mythback scott]# iecset audio 1
> control "IEC958 Playback Default" (index -1) not found
> [root at mythback scott]# iecset -x
> control "IEC958 Playback Default" (index -1) not found
> 
> Any thoughts?
> 
> 
> 
> P.S. Thank you for all your help so far.
> 
> 
> 
> 
> ----- Original Message ----
> From: Alen Edwards <allen.edwards at oldpaloalto.com>
> To: Discussion about mythtv <mythtv-users at mythtv.org>
> Sent: Monday, July 7, 2008 1:40:34 AM
> Subject: Re: [mythtv-users] hauppauge hvr-1800 very low volume
> 
> genius9976 at yahoo.com <mailto:genius9976 at yahoo.com> wrote:
>  > On my old system my speakers were attached via analog.  On my current
>  > box, they are attached via spdif.  However, when I just output audio via
>  > the headphones, digital recordings are still quieter, though I think the
>  > problem is not as bad.  In fact, using headphones, the difference
>  > between myth and other programs disappears, though the difference
>  > between analog and digital recording remains.  I guess myth is sending
>  > quieter audio than other programs digitally, but not via analog.  Why
>  > would that be?  In alsa mixer (and master and pcm mixer volume in the
>  > myth audio setting) everything is turned up all the way.  Also, I think
>  > I'm using pulse audio.  I do not have the ac3/dts to spdif passthrough
>  > options enabled (I haven't been able to get them to work).
>  >
>  >
> 
> I would be curious if the setup that worked for me on Mythbuntu 8.04
> works for you.  I get similar level bit pure spdif output for TV and
> Music.  Nothing else that was recommended or in any of the wiki gave me
> this.
> 
> Try this:
> 
> Audio output device:  ALSA:spdif
> Passthrough output device:  ALSA:iec958:(AESO 0x02)
> Max Audio Channels:  Stereo
> Upmix: passive
> Enable AC3 to SPDIF passthrough  CHECKED
> Enable DTS to SPDIF passthrough  CHECKED
> Use internal volume NOT CHECKED
> Aggressive sound  NOT CHECKED
> 
> /etc/X11/asound.conf  REMOVED (or renamed)
> ~/.asouncrc  REMOVED  (or renamed)
> 
> Also, if you issue these commands:
> iecset audio 1
> iecset -x
> 
> You should see AES0 0x02 somewhere in this last output.  If you don't,
> you might want to try changing the Passthrough to whatever your card says.
> 
> Let me know what happens.
> 
> Allen

Type this:
aplay -l

see which device is the digital output, say it is N

Then
iecset audio N
iecset -x

Then see what AES0 is

Sorry for leaving this out.  My understanding is not complete, but 
improving.

Her is what I get with these commands:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC883 Analog [ALC883 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: ALC883 Digital [ALC883 Digital]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
$ iecset audio 1
Mode: consumer
Data: audio
Rate: 48000 Hz
Copyright: protected
Emphasis: none
Category: PCM coder
Original: original
Clock: 1000 ppm
$ iecset -x
AES0=0x00,AES1=0x82,AES2=0x00,AES3=0x02
$




Allen