Raymond Yau wrote:
2010/2/27 Angel Tsankov fn42551@fmi.uni-sofia.bg
I'd also like to point out that in /etc/asound.state the values for control.48 are the maximum possible (if I interpret the values right), but when I stored the levels neither master, nor PCM was set to its maximum value.
Regards, Angel Tsankov
That is the per voice volume control which use the hardware mixer in ymf754
The device in question is YMF724F.
chip instead of the mixer of ac97 codec
ymf754 has 32 playback subdevices , each subdevices has one hardware mixer volume control
the values are set to 0dB by the driver when the subdevice is open , DSP can mix 32 streams by hardware
when the driver is loaded there are 32 controls which are inactive and the total number of controls should more that those controls in asound.state since those iface PCM "PCM playback volume controls" are not saved at shutdown because all 32 controls are inactive when 32 subdevices are closed
Angel Tsankov