Sound mixer

[Anselm Strauss]

Hi,

I'm using the snd_hda driver on FreeBSD 8.0 for my ATI SB600 sound chip.
First, I can't adjust the main volume with the mixer(8) command. If I set it
to 0 everything is muted, when I set it to 1-100 sound is unmuted but has
the same volume for all values. Second, is it possible to mute the sound
with the mixer command and later unmute it restoring the values I had before
muting?

Thanks for any help,
Anselm