[pulseaudio-discuss] Configuring alsa mixers in the "off" profile.

[Mark Brown]

On Mon, Oct 10, 2011 at 01:01:00PM +0300, Matti J. Aaltonen wrote:
> On 10/07/2011 03:49 PM, ext Mark Brown wrote:

> >What I said was that the entire audio system should be one card.

> I didn't read it that way,but OK... Just one more comment/question:
> I would have thought that to achieve as fine grained power
> management as practical you'd want to divide the radio system into
> two parts: the actual radio chip and the headphone amplifier. Our
> example system would (in my view) look like the following:

Power management is done at a *much* more fine grained level than whole
device level.

> And in this configuration you could (A) create a path from some
> digital source (for example the digital signal from the radio
> through a mixer etc.) though the DAC to the amplifier. Or you could
> (B) form a purely analog path from the radio to the amplifier and
> have the DAC off if path A was inactive. Makes sense or not?

This is all really basic stuff that's been supported by the kernel since
2.6.21.