Re: Setup when compiled in 2.6 kernel

[John Talbut <john@dpets.demon.co.uk>]

Lee Revell wrote:

>>
>>>This is not how ALSA works, you can't just cat things to the device
>>>file.  The interface to ALSA is through alsa-lib.
>>
>>Can you or anyone explain this, or point to an explanation?
> 
> 
> What's to explain?

Well, some other devices can be checked to see if they are working by 
cat-ing to them.  It seems as if these are different.

>  Userspace apps don't access the device files
> directly.  They should use the alsa-lib API.  Here is the documentation:
> 
> http://www.alsa-project.org/alsa-doc/alsa-lib/

Thanks for that, I guess the answer is there, I will study it more when 
I get a moment.
> 
>>>What happens if you start SIMPLE:
>>>
>>>aplay file.wav
>>
>># aplay /dos/Workspace/Music/originaldedodedo.wav
>>ALSA lib pcm.c:2099:(snd_pcm_open_noupdate) Unknown PCM default
>>aplay: main:544: audio open error: No such file or directory
>>
> 
> 
> 
> Because it defaults to device 0 which is usually a real soundcard, but
> not on your system:
> 
> /proc/asound/cards:
> 
> 0 [Dummy          ]: Dummy - Dummy
>                       Dummy 1
> 1 [VirMIDI        ]: VirMIDI - VirMIDI
>                       Virtual MIDI Card 1
> 2 [AudioPCI       ]: ENS1371 - Ensoniq AudioPCI
>                       Ensoniq AudioPCI ENS1371 at 0xdf00, irq 10
> 
> Try unloading the snd-dummy and snd-virmidi modules, or don't enable
> them when compiling the kernel.

Is there any way of testing whether this is the/a problem before I 
recompile the kernel?  I will have to upgrade it when I recompile (2.6.8 
does not compile with gcc-4.0, which is what I have now.)
> 
> Did you try this first with your distro's default kernel before building your own?

No, I have been using custom compiled kernels for a long time.

John


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