Re: alsactl adds volume controls?

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At Thu, 30 Sep 2010 17:47:53 +0100,
Mark Brown wrote:
> 
> On Thu, Sep 30, 2010 at 04:09:56PM +0100, Colin Guthrie wrote:
> 
> > *shouldn't* use them, but at present it does and they *are* active and
> > used, so it's not an issue for me), the problem is rather one of setting
> > Master (not PCM) to 0% aka -46.5dB causes some kind of auto-mute that
> > cuts off all sound. It shouldn't do that. I've not muted it. I've set it
> 
> Is this perhaps just an error in the TLV information - should it be
> flagging that the minimim gain is mute but isn't?

There is no clear (or consistent) definition in HD-audio codec, I guess.
Some chips do mute at 0 and some not.  The capability bit shows only
whether it can mute or not -- not about whether it mutes at zero.


Takashi
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