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Date: Fri, 21 Aug 2009 00:13:51 +0200
From: Christian Ramseyer <rc@networkz.ch>
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Subject: Re: Audio on Sunblade 100
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>>
>> Unfortunately, the actual "playing sound part" is not going too well.
>> When I do e.g. :
>>
>> rc@ds9000:~ $ mpg321 03\ Wonderful\ Night\ \(feat\ Lateef\).mp3
>> High Performance MPEG 1.0/2.0/2.5 Audio Player for Layer 1, 2, and 3.
>>
>> I sometimes get some seconds of sound, but most of the time only silence
>> or a short burst of static, and then
>>
>> pcm0:virtual:dsp0.vp0: play interrupt timeout, channel dead
>>
>> appears on the console.
>>
> 
> How about disabling vchans in /boot/loader.conf?
> (dev.pcm.0.play.vchans="0")

Setting this in /boot/loader.conf didn't seem to have any effect:

[root@ds9000 ~]# cat /boot/loader.conf
dev.pcm.0.play.vchans="0"

(reboot)

[root@ds9000 ~]# sysctl dev.pcm.0.play
dev.pcm.0.play.vchans: 1

However, I was able to set it via sysctl (is this the same?):

[root@ds9000 ~]# sysctl dev.pcm.0.play.vchans="0"
dev.pcm.0.play.vchans: 1 -> 0

There isn't any sound either, but the logged message changes:

pcm0:play:dsp0.p0: play interrupt timeout, channel dead


Thanks
Christian