AC97 on FBSD 5.1p8 on Clevo Laptop

Jon Mercer jon.mercer at achean.com
Fri Sep 26 05:59:02 PDT 2003


Ah! Ok, it is meant to be pcm0, but the device doesn't get created:

sysctl -a | grep pcm
hw.snd.pcm0.buffersize: 16384
hw.snd.pcm0.vchans: 0
hw.snd.pcm0.ac97rate: 48000

Anyone know what I have to do to get the pcm0 device created under devfs?


Jon Mercer wrote:
> I have a Clevo Laptop (don't ask why) with an AC97 sound card that I 
> have had running on 4.8, but cannot be accessed under 5.1 using devfs.
> 
> The problem is noticable when starting KDE, which generates the mesage 
> about /dev/dsp not being accesible. Which is hardly surprising, since 
> there isn't one.
> 
> I've never worked out which device should be created for AC97, but guess 
> that it isn't /dev/pcm0, since there is the appropriate device line in 
> the kernel config, but the device doesn't get created at boot time.
> 
> Question is which device should I be putting in the kernel config and 
> accessing in /dev to make the sound card accessible. (Assuming it is 
> compatible with 5.1.)
> 
> Any comments gratefully received.

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