Re: [Alsa-user] alsa-lib and RME HDSP9652

[Andre S. <and...@io...>]

Am Tue, 7 Aug 2012 10:33:49 +0200
schrieb Anders Genell <and...@gm...>:

> > 
> > Both aplay and jack _are_ apps using alsa-lib.
> 
> Aha!!
> So if they work, so should the others?!
> 
Theoretically yes - every user space app using (kernel space) ALSA does
so via alsa-lib normally.


> > 
> >> [AO_ALSA] Unable to set hw-parameters: Device or resource busy
> > 
> > The hdsp driver generates this error if the requested sample rate
> > does not match its internal sample rate, but I don't know how
> > exactly this driver handles sample rates.  Probably you have to
> > configure the clock source differently.
> 
> I get this error even if pointing to a plug PCM (such as plughw), and
> even if using natively supported (e.g. 44100 and 48000) rates. How
> can I configure the clock source?
>
I don't have a 9652, so some hints only. Start with:

$ amixer -c X contents

where X is your card number acc. to /proc/asound/cards. Read through
the output until you find the desired control, e.g. samplerate. Then do:

$ amixer -c X cset numid=Y Z

Y is the ID of the control and Z is the index value to use - amixer will
tell you those two.

For more information refer to "man amixer".


> Should I setup something in hdspconf?
> 
Haven't used this, sry.


Regards,
   Andre