linuxaudio.org

----- Original Message -----

From: S. Massy

To: James Warden

Cc: "linux-audio-user@lists.linuxaudio.org"

Sent: Wednesday, October 19, 2011 9:34 PM

Subject: Re: [LAU] Alsa to jack bridge and asoundrc
On Wed, Oct 19, 2011 at 04:06:53AM -0700, James Warden wrote:

quoted text
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>

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>

> ----- Original Message -----

>

> I compiled the aloop module and it works fine, but when I try setting up

> the asoundrc as described, and use the device, I get.

> ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave

> aplay: main:654: audio open error: Invalid argument

>

> Does anyone know what this uninformative error mean? Has anybody ever

> had luck with a similar setup?

> -----

>

> Hi, I use this setup as described in the wiki page (I wrote that page myself ;) and have no issue.

> You should provide the version numbers of libasound and alsa, how they were installed, etc.

> Version mismatch can cause this kind of problems I think.

Well, libasound is a Debian package from Squeeze and is 1.0.13. The

drivers are from kernel 2.6.33.7.2-rt30, apart from aloop which is from

release 1.0.24 of alsa-drivers. Aloop compiles and loads fine and seems to

work when used standalone, but once the asoundrc is in place, I get the

error described earlier.

Cheers,

S.M.

-----
For the driver version, try 
cat /proc/asound/version
For libasound2 stuff:
dpkg -l libasound2

dpkg -l libasound2-plugins
It is probably best when they all match.
J.
PS: I use debian sid.

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