[alsa-devel] Error enabling dmix with ALSA

[Takashi Iwai]

At Thu, 20 Aug 2009 13:02:20 +0530,
ruchi sirauthiya wrote:
> 
> Hi,
> No, I do not have /dev/snd/timer device entry.

That's the reason.  dmix uses the ALSA timer device to sync the
position.


Takashi

> 
> A small correction... I am using TPS65950 codec and not TWL4030.
> 
> Ruchi Sirauthiya
> 
> 
> On Wed, Aug 19, 2009 at 5:46 PM, Takashi Iwai <tiwai at suse.de> wrote:
> 
> > At Sun, 16 Aug 2009 15:49:11 +0530,
> > ruchi sirauthiya wrote:
> > >
> > > Hi,
> > >
> > > I am trying to enable a software mixer (using ALSA and dmix) on an OMAP3
> > > based embedded target board using the twl4030 codec.
> > >
> > > When I try to play audio using the command,
> > >
> > > # aplay -D playback rec.wav
> > >
> > > I am getting the following error:
> > >
> > > ALSA lib pcm_direct.c:1098:(snd_pcm_direct_initialize_poll_fd) unable to
> > > open timer 'hw:CLASS=3,SCLASS=0,CARD=0,DEV=0,SUBDEV=0'
> >
> > Do you have /dev/snd/timer device?
> >
> >
> > Takashi
> >
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>