[alsa-devel] Intel card master and PCM channels doesn't work
tiwai at suse.de
Thu Aug 13 10:14:03 CEST 2009
At Thu, 13 Aug 2009 10:55:38 +0300,
Mantas Pilipavičius wrote:
> Can you explain more detailed? What is data manipulation?
You need to change all the stream data multiplying the volume
gain/attenuation in software because you hardware gives no volume
control by itself.
In the case of alsa-lib, it's softvol plugin. Or, if you use PA,
PA does it automatically.
> On Thu, Aug 13, 2009 at 8:41 AM, Takashi Iwai <tiwai at suse.de> wrote:
> At Thu, 13 Aug 2009 00:39:48 +0300,
> Mantas Pilipavičius wrote:
> > http://www.alsa-project.org/db/?f=
> > Everything works great, I can play the sound, but PCM and Master
> > don't work, so I can't increase or decrease volume. Only thing I can do
> > mute/unmute PCM channel
> This hardware has no volume control indeed.
> The volume has to be adjusted in software by data manipulation.
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