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Date:      29 Apr 2002 15:06:28 -0400
From:      Joe Marcus Clarke <marcus@marcuscom.com>
To:        kendall@jedis.com
Cc:        questions@FreeBSD.ORG
Subject:   Re: pcm with AC'97 audio not working
Message-ID:  <1020107188.22787.22.camel@gyros.marcuscom.com>
In-Reply-To: <200204290608.g3T68Rjl002153@frodo.jedis.com>
References:  <200204290608.g3T68Rjl002153@frodo.jedis.com>

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On Mon, 2002-04-29 at 03:08, Kendall P. Gifford wrote:
> Hello all. I have AC'97 audio integrated into my motherboard, an MSI KT3 
> Ultra-ARU (via apollo kt333 chipset, vt8233a southbridge, with integrated 
> realtek alc650 6-channel ac'97 audio). I get the following line from dmesg 
> during bootup:
> 
> pcm0: <VIA VT8233> port 0xe800-0xe8ff irq 9 at device 17.5 on pci0
> 
> I have also run MAKEDEV snd0; as described in the pcm(4) man page. Then, 
> following the recommended testing procedure in the handbook, I installed 
> mpg123 and tried to play an mp3 with the following results:
> 
> #mpg123 waste.mp3
> [...omitted startup lines...]
> pcm0:play:0: play interrupt timeout, channel dead

Try applying this patch to /sys/dev/sound/pcm/ac97.c

http://docs.freebsd.org/cgi/getmsg.cgi?fetch=14481+0+archive/2002/freebsd-multimedia/20020414.freebsd-multimedia

In fact, you may find some use in this whole thread.  It looks like some
patches are being committed to -current to address this problem.

Joe

> 
> I was hoping that there would be support for my on-board sound and was 
> excited when I saw AC'97 support in the pcm driver. Can someone shed some 
> light on the problem? Have I possibly not setup something correctly? Is 
> there some bug that just needs fixed? Is there just not support for my 
> RealTek ALC650 AC'97 Audio yet?
> 
> Thanks in advance for your help.
> ========================================
> Kendall P. Gifford
> http://kendall.jedis.com
> kendall@jedis.com
> ========================================
> 
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-- 
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