[LAU] Missing master-volume on onboard soundcard?

[Michael Jarosch]

Hi, there!


Since approximately one year I have a new motherboard for my living-
room-PC, called Biostar HiFi A88S3+. It's sound-device is a HDA-Intel
with ALC892 Codec.

I also use an "amplifier card" that is powered by the PCI-slot.

With all of my recent equipment I've ever used it was possible to
reduce noise that is produced by the digital devices in the PC:
Lowering the master level did the trick. Just with the Biostar "HiFi"
this doesn't seem to be possible. It always sounds like the master is
open and all the noise comes quite audible through the speakers to my
living room.

Don't get me wrong: The master works. But it seems that lowering the
volume is done by software. I wonder if this is a brand new method for
manufacturers to save money or if probably the ALSA-driver is doing
something wrong here?


$ cat /proc/asound/cards
 0 [HDMI           ]: HDA-Intel - HDA ATI HDMI
                      HDA ATI HDMI at 0xfeb64000 irq 45
 1 [Generic        ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xfeb60000 irq 16



Greets!
Mitsch