[alsa-devel] Question about snd_mixer_selem_get_playback_dB_range()
clemens at ladisch.de
Mon Mar 21 15:38:59 CET 2011
Tanu Kaskinen wrote:
> On Mon, 2011-03-21 at 15:43 +0200, Raymond Yau wrote:
> > AFAIK , only those STAC920x codec has SND_CTL_TLV_DB_GAIN_MUTE
> Also some broken HDA cards,
Where "some" = "those that use a STAC920x codec".
> What is not any driver bug?
That the hardware reported a wrong dB value for the lowest volume
setting. The latest driver has a workaround.
> Is it a bug in alsa (the driver or alsa-lib or whatever) if
> snd_mixer_selem_get_playback_dB_range() returns something else than
> SND_CTL_TLV_DB_GAIN_MUTE as the min gain, if the lowest volume step for
> the element is mute?
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