Master volume not adjustable

[Lars Stokholm]

Hi there...

The master volume of my sound card isn't adjustable. The pcm volume
is. Setting vol to 0 with mixer has no effect. (I've seen that Ariff
Abdullah has made some patches for similar problems, but I'm new to
FreeBSD - I don't even know how to (apply and) install a patch, to
test them.)

# uname -a
FreeBSD stokholm.dyndns.dk 6.1-STABLE FreeBSD 6.1-STABLE #0: Tue May
16 01:21:26 CEST 2006
root at stokholm.dyndns.dk:/usr/obj/usr/src/sys/GENERIC  i386

# pciconf -lv | grep -B 4 audio
pcm0 at pci0:31:5: class=0x040100 card=0x01201462 chip=0x24d58086 rev=0x02 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller'
    class    = multimedia
    subclass = audio