snd_via8233 - no volume control

[Erik Udo]

Aleš wrote:
> Hi all.
> 
> I have Asrock K7VT4A Pro motherboard with via VT8237 chipset. Sound is 
> great, I just can not control the volume. I know it is a known issue, 
> but maybe this information can help someone to resolve this problem. I 
> run FreeBSD 5.4-RELEASE-p6.
> 
> I applied a patch from 
> http://staff.mybsd.org.my/skywizard/FreeBSD/sound/snd_RELENG_5_20050825_035.diff, 
> but still no luck.
> After that dmesg shows:
> 
> dmesg | grep pcm
> pcm0: <VIA VT8237> port 0xc400-0xc4ff irq 22 at device 17.5 on pci0
> pcm0: <Unknown AC97 Codec (id = 0x434d4983)>
> pcm0: <VIA DXS Enabled: DXS 4 / SGD 1 / REC 1>
> 
> cat /dev/sndstat
> FreeBSD Audio Driver (newpcm)
> Installed devices:
> pcm0: <VIA VT8237> at io 0xc400 irq 22 kld snd_via8233 (5p/5s/1r/0v 
> channels duplex default)
> 
> Win driver says it is a CMI 9761A codec. If I boot from "live" FreeSBie 
> CD, 1.1 it is the same situation.
> 
> Thanks for your support, Ales.
> 
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> 

My card:
dmesg | grep pcm
pcm0: <VIA VT8237> port 0xe400-0xe4ff irq 22 at device 17.5 on pci0
pcm0: <Analog Devices AD1888 AC97 Codec>
pcm0: <VIA DXS Disabled>

cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <VIA VT8237> at io 0xe400 irq 22  (1p/1r/6v channels duplex default)

This is on a 5.4 system.
The mixer vol doesn't affect the volume, but
pcm and ogain does. Try them.

Did you search google?
http://www.google.fi/search?q=0x434d4983