Hi there,
I have an eMachines 1401 nettop mini-desktop PC. It has a low-power AMD64
dual-core CPU and an onboard nVidia Geforce 9200 GPU. In order for the sound to
work the nVidia binary drivers must be loaded. My distro is Gentoo; I have
versions c 1.0.25 of alsa-lib, -headers and -tools installed.
# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC662 rev1 Analog [ALC662 rev1
Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC662 rev1 Digital [ALC662 rev1
Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
#
The analogue headphone socket is selected by default. If I run `aplay -vvD
file.wav` then the audio plays to the headphone socket.
To play to the TV via HDMI, not only must I run `aplay -vvD plug:hdmi
file.wav`, but then I must run `amixer sset 'IEC958',1 unmute` (or,
alternatively, unmute this channel manually using alsamixer, where it is marked
"S/PDIF 1").
I want to play to the TV by HDMI by default.
I find that I can select this output with the following /etc/asound.conf:
# cat /etc/asound.conf
pcm.!default {
type hw
card 0
device 3
}
#
Now next time I reboot my computer `aplay -vvD file.wav` plays to the TV by
default. However I must still manually unmute the "S/PDIF 1" channel before the
music is actually audible.
Is it possible to configure a muting / unmuting default for a channel in
/etc/asound.conf, please?
I understand that I can store the current state - including muting - with
`alsactl -f file store` and then `alsactl -f file restore` on next boot-up. My
disto provides an init.d script for this purpose, but I would prefer not to do
things that way.
I would prefer to set the default by /etc/asound.conf or similar, I guess),
rather than saving a state. I hope this distinction makes sense, and I am not
alone in perceiving it.
Thanks for reading, and thanks in advance for any help you can offer,
Stroller.
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