[alsa-devel] HDA: Sound mutes when combination is below -48 dB

[Clemens Ladisch]

David Henningsson wrote:
> I'm trying to nail down a strange behaviour. I have one "Master" and one
> "Speaker" (or "Headphone") volume control, each ranging from -48 dB to 0
> dB. Whenever the sum of "Master" and "Speaker" is below -48 dB, the
> output mutes.

A known SigmaTel bug.  Does your kernel already have these patches?
http://git.alsa-project.org/?p=alsa-kernel.git;a=commit;h=de8c85f7840e5e29629de95f5af24297fb325e0b
http://git.alsa-project.org/?p=alsa-kernel.git;a=commit;h=a74ccea51d4314632a81d568d59bf885e5b09d93


Regards,
Clemens