Re: Problem in testing ALSA

Re: Problem in testing ALSA

[Chow Raymond]

Basically I want to test whether ALSA is working on my
board or not. I got the ALSA driver built in to the
kernel and then installed ALSA libraries and utils.
When I perform aplay, I get this error.

[root@ARMCore /]$ aplay /home/test/decoded_4350.wav
ALSA lib pcm.c:1962:(snd_pcm_open_noupdate) Unknown
PCM default
aplay: main:507: audio open error: No such file or
directory

I suspect that I need the snd_pcm module loaded before
aplay could work. Thus, I need to modprobe soundcore
module before I can modprobe snd_pcm module.

Hope you get a clearer picture. Willing to clarify
more if you need more information. Hope to hear from
you soon. 

Thanks.

Regards

--- Lee Revell <rlrevell@joe-job.com> wrote:

> On Mon, 2005-08-01 at 18:12 -0700, Chow Raymond
> wrote:
> > Hi,
> > 
> > I encounter this problem.
> > 
> > [root@ARMCore user]$ modprobe soundcore
> > modprobe: /lib/libc.so.6: version `GLIBC_2.2.3'
> not
> > found (required by mod)
> > 
> > Do I need GLIBC? If yes, where do I get it and
> where
> > shall I install it?
> 
> You can't link a kernel module against glibc.
> 
> What are you trying to do?
> 
> Lee
> 
> 
> 
>
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Re: Problem in testing ALSA

[Lee Revell]

On Tue, 2005-08-02 at 18:21 -0700, Chow Raymond wrote:
> [root@ARMCore /]$ aplay /home/test/decoded_4350.wav
> ALSA lib pcm.c:1962:(snd_pcm_open_noupdate) Unknown
> PCM default
> aplay: main:507: audio open error: No such file or
> directory
> 

No, that probably just means that the default pcm is not defined.  This
is actually a userspace (alsa-lib) problem, it sounds like the kernel
side might be OK.

But, please repost your query, and cc: alsa-devel, because I don't know
that much about the ARM drivers.

Lee



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Re: Problem in testing ALSA

[Chow Raymond]

--- Lee Revell <rlrevell@joe-job.com> wrote:


> No, that probably just means that the default pcm is
> not defined.  This
> is actually a userspace (alsa-lib) problem, it
> sounds like the kernel
> side might be OK.

I don't get it. Default pcm is not defined? How do i
define it then? Does it mean that aplay cannot find
the appropriate libraries? Besides, I do not know how
to configure my /etc/modules.conf too since Im using
Compulab ArmCore board. There is no built in
soundcard. It only has built in AC97 codec.

Regards

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Re: Problem in testing ALSA

[Lee Revell]

On Tue, 2005-08-02 at 20:37 -0700, Chow Raymond wrote:
> --- Lee Revell <rlrevell@joe-job.com> wrote:
> 
> 
> > No, that probably just means that the default pcm is
> > not defined.  This
> > is actually a userspace (alsa-lib) problem, it
> > sounds like the kernel
> > side might be OK.
> 
> I don't get it. Default pcm is not defined? How do i
> define it then? Does it mean that aplay cannot find
> the appropriate libraries? Besides, I do not know how
> to configure my /etc/modules.conf too since Im using
> Compulab ArmCore board. There is no built in
> soundcard. It only has built in AC97 codec.

See /usr/share/alsa/alsa.conf.  Some devices can define their own
default PCM in /usr/share/alsa/cards/*.  But I have no idea how the AC97
codec on ARM fits into this scheme.

Try aplay -D hw:0,0 file.wav.  And make sure alsa-lib is installed
properly.

Lee



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Re: Problem in testing ALSA

[Lee Revell]

On Tue, 2005-08-02 at 18:21 -0700, Chow Raymond wrote:

Disregard my last message, I see that you did cc: alsa-devel already.

Lee



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Re: Problem in testing ALSA

[Chow Raymond]

So what shall I do? Must I download library? If yes,
may I know what are the steps and procedure?

Thanks a lot.

Regards

--- Clemens Ladisch <clemens@ladisch.de> wrote:

> Chow Raymond wrote:
> > [root@ARMCore user]$ modprobe soundcore
> > modprobe: /lib/libc.so.6: version `GLIBC_2.2.3'
> not found (required by mod)
> 
> modprobe cannot be executed because the C runtime
> library (libc.so.6)
> is too old; this modprobe was compiled against a
> newer version.
> 
> This has nothing to do with ALSA.
> 
> 
> HTH
> Clemens
> 
> 



		
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Re: Problem in testing ALSA

[Takashi Iwai]

At Tue, 2 Aug 2005 18:16:59 -0700 (PDT),
Chow Raymond wrote:
> 
> So what shall I do? Must I download library? If yes,
> may I know what are the steps and procedure?

Better to ask on ARM list.  It's not the topic ALSA covers at all...
(I guess you did something wrong in the compilation, though - e.g.
 using a wrong compiler or a wrong cross-compile environment.)
 

Takashi


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