Re: pcm0 playing too fast.

From: David Gilbert <>
Date: Thu, 25 Sep 2003 20:10:21 -0400
>>>>> "Kevin" == Kevin Oberman <> writes:

>> From: David Gilbert <> Date: Wed, 24 Sep 2003
>> 22:57:36 -0400 Sender:
>> It's my perception that some recent current (and I'm not positive
>> when) has made a change that is causing the pcm device to play
>> sounds a tone or so too fast.  The device probs in the kernel as:
>> pcm0: <Intel ICH4 (82801DB)> port 0xbc40-0xbc7f,0xb800-0xb8ff mem
>> 0xf4fff400-0xf4fff4ff,0xf4fff800-0xf4fff9ff irq 11 at device 31.5
>> on pci0 pcm0: <SigmaTel STAC9750/51 AC97 Codec>
>> and it definately didn't have this behaviour in 5.1-RELEASE.

Kevin> Does it do this all the time or only after the system has been
Kevin> suspended and resumed? If so, take a look at
Kevin> I know Orion
Kevin> has looked at it, but I don't know when he might have a fix for
Kevin> it.

Kevin> You might check the value of hw.snd.pcm0.ac97rate. If it is not
Kevin> 48000, try setting it to that value.  -- R. Kevin Oberman,

As the author says, changing that value doesn't appear to have
effect... but 48000 is it's default setting.


|David Gilbert, Independent Contractor.       | Two things can only be     |
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Received on Thu Sep 25 2003 - 15:10:24 UTC

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