2010/10/1 Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > 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? > For hda codec , the amplifiers can be found at [Audio Output], [Audio Mixer] and [Pin complex] Also the codec specification define which step is 0dB , number of step and dB for each step Some codec can even be connected to a hardware volume knob It also explicitly define a mute switch, so I don't think there is reason to assume the minimum dB value is equal to mute ( -infinite dB ) In this case, the driver seem need to make some adjustment when there is no volume knob connected , you may need to find another user with the same codec connected to a volume knob or peform some calibration to find out how to make the adjustment _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
