[alsa-devel] ALSA, GStreamer and surround

[Takashi Iwai]

At Thu, 29 Mar 2007 15:57:22 +0200,
Christian F.K. Schaller wrote:
> 
> On Thu, 2007-03-29 at 14:01 +0200, Takashi Iwai wrote:
> 
> <snip>
> > > Since Jan brought up the issue of behaviour differences between
> > > plug:surround51 ad surround51 I thought I give you the output of that
> > > too.
> > > 
> > > aplay -D surround51:0 dust51.wav 
> > > Playing WAVE 'dust51.wav' : Signed 16 bit Little Endian, Rate 48000 Hz,
> > > Channels 6
> > > aplay: set_params:878: Broken configuration for this PCM: no
> > > configurations available
> > > 
> > > aplay -D plug:surround51:0 dust51.wav 
> > > Playing WAVE 'dust51.wav' : Signed 16 bit Little Endian, Rate 48000 Hz,
> > > Channels 6
> > > ALSA lib pcm_params.c:2152:(snd_pcm_hw_refine_slave) Slave PCM not
> > > usable
> > > aplay: set_params:878: Broken configuration for this PCM: no
> > > configurations available
> > 
> > Which hardware do you have and which alsa-lib version are you using?
> > surround51 should work in this case...
> 
> [cschalle at localhost Desktop]$ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: I82801DBICH4 [Intel 82801DB-ICH4], device 0: Intel ICH [Intel
> 82801DB-ICH4]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 0: I82801DBICH4 [Intel 82801DB-ICH4], device 4: Intel ICH - IEC958
> [Intel 82801DB-ICH4 - IEC958]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> 
> [cschalle at localhost Desktop]$ rpm -qa|grep alsa
> alsa-lib-1.0.14-0.1.rc1.fc6
> alsa-lib-devel-1.0.14-0.1.rc1.fc6
> alsa-tools-1.0.12-4.fc6
> alsa-utils-1.0.14-0.1.rc1.fc6

So far, so good.  And which codec chip?

You may see more (sometimes too) verbose errors when you set
the environment variable LIBASOUND_DEBUG=1 or 2.  Give it a try.


Takashi