[alsa-devel] alsactl adds volume controls?

Colin Guthrie gmane at colin.guthr.ie
Thu Sep 30 20:20:21 CEST 2010

'Twas brillig, and Takashi Iwai at 30/09/10 19:09 did gyre and gimble:
> 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.

Is there some way I can force this metadata into the driver of files for
my h/w in such a way that PA will pick up on it and thus work correctly?



Colin Guthrie

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