Re: [Alsa-user] dmix not working with intel8x0 (ICH4)

Re: [Alsa-user] dmix not working with intel8x0 (ICH4)

[Lee Revell]

This is a bit over my head, someone on alsa-devel can probably answer.

You can't easily "fix it" - softvol and dmix are incompatible so
ICH4.conf is incorrect.  You have to use one or the other for now.

Lee

On Wed, 2005-09-21 at 08:46 +0200, Morten Nilsen wrote:
> Lee Revell wrote:
> > On Tue, 2005-09-20 at 16:44 +0200, Morten Nilsen wrote:
> > 
> >>mortenn@onihime ~$ xmms
> >>Message: device: default
> >>ALSA lib pcm_direct.c:777:(snd_pcm_direct_initialize_slave) unable to 
> >>install hw params
> >>ALSA lib pcm_dmix.c:814:(snd_pcm_dmix_open) unable to initialize slave
> >>
> >>** WARNING **: alsa_setup(): Failed to open pcm device (default): 
> >>Inappropriate ioctl for device
> > 
> > OK it's the interaction with dmix and softvol.
> > 
> > alsa/alsa-lib/src/pcm/pcm_dmix.c:
> > 
> > ICH4.conf:
> > 
> > So these files disagree on whether dmix + softvol is legal.  
> > Who does snd_pcm_type(spcm) not trigger the assert?  
> > Did someone forget to add softvol to the list of types?
> 
> I did some poking about in pcm.c, and this wasn't enough to fix it, in 
> any case..
> 
> --- alsa-lib-1.0.9.org/src/pcm/pcm.c    2005-05-24 16:14:31.000000000 +0200
> +++ alsa-lib-1.0.9/src/pcm/pcm.c        2005-09-21 10:31:11.898017056 +0200
> @@ -1512,6 +1512,7 @@
>          PCMTYPE(LADSPA),
>          PCMTYPE(DMIX),
>          PCMTYPE(JACK),
> +       PCMTYPE(SOFTVOL),
>   };
> 
>   static const char *snd_pcm_subformat_names[] = {



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Re: [Alsa-devel] Re: dmix not working with intel8x0 (ICH4)

[Takashi Iwai]

At Wed, 21 Sep 2005 03:05:59 -0400,
Lee Revell wrote:
> 
> This is a bit over my head, someone on alsa-devel can probably answer.
> 
> You can't easily "fix it" - softvol and dmix are incompatible so
> ICH4.conf is incorrect.  You have to use one or the other for now.
> 
> Lee
> 
> On Wed, 2005-09-21 at 08:46 +0200, Morten Nilsen wrote:
> > Lee Revell wrote:
> > > On Tue, 2005-09-20 at 16:44 +0200, Morten Nilsen wrote:
> > > 
> > >>mortenn@onihime ~$ xmms
> > >>Message: device: default
> > >>ALSA lib pcm_direct.c:777:(snd_pcm_direct_initialize_slave) unable to 
> > >>install hw params

This is usually either a wrong dmix set up, the permission problem, or
the conflict of device opens with OSS apps.


Takashi


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