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88 lines
2.5 KiB
88 lines
2.5 KiB
8 years ago
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#!/bin/sh
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# Load the mixer settings and OSS compatibility (if enabled) for ALSA.
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# (the Advanced Linux Sound Architecture)
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# A function to load the ALSA mixer settings:
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load_alsa_mixer() {
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if [ -r /var/lib/alsa/asound.state ]; then
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echo "Loading ALSA mixer settings: /usr/sbin/alsactl restore"
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/usr/sbin/alsactl restore
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else
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# It's possible a user might not want to set a default sound state.
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# In that case, do this: touch /var/lib/alsa/no.asound.state
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if [ ! -r /var/lib/alsa/no.asound.state ]; then
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echo "Setting default ALSA mixer settings."
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# set default mixer volumes for ALSA
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# Taken from the alsaconf script.
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amixer -s -q <<EOF
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set Master 75% unmute
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set Master -12dB
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set 'Master Mono' 75% unmute
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set 'Master Mono' -12dB
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set Front 75% unmute
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set Front -12dB
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set PCM 90% unmute
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set PCM 0dB
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mixer Synth 90% unmute
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mixer Synth 0dB
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mixer CD 90% unmute
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mixer CD 0dB
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# mute mic
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set Mic 0% mute
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# ESS 1969 chipset has 2 PCM channels
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set PCM,1 90% unmute
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set PCM,1 0dB
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# Trident/YMFPCI/emu10k1
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set Wave 100% unmute
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set Music 100% unmute
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set AC97 100% unmute
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# CS4237B chipset:
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set 'Master Digital' 75% unmute
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# Envy24 chips with analog outs
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set DAC 90% unmute
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set DAC -12dB
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set DAC,0 90% unmute
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set DAC,0 -12dB
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set DAC,1 90% unmute
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set DAC,1 -12dB
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# some notebooks use headphone instead of master
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set Headphone 75% unmute
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set Headphone -12dB
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set Playback 100% unmute
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# turn off digital switches
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set "SB Live Analog/Digital Output Jack" off
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set "Audigy Analog/Digital Output Jack" off
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EOF
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echo "Storing default ALSA mixer settings: /usr/sbin/alsactl store"
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/usr/sbin/alsactl store
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fi
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fi
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}
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# If udev or something else has loaded the ALSA modules, then
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# simply load the mixer settings and make sure the OSS compat
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# modules are loaded (if enabled):
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if [ -d /proc/asound ]; then
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if [ -x /etc/rc.d/rc.alsa-oss ]; then
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sh /etc/rc.d/rc.alsa-oss
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fi
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load_alsa_mixer
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else
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# If there are ALSA modules defined in /etc/modprobe.d/*, but
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# ALSA is not yet loaded, then load the modules now:
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DRIVERS=$(modprobe -c | grep -E "^[[:space:]]*alias[[:space:]]+snd-card-[[:digit:]]" | tr -s "[[:blank:]]" " " | cut -d " " -f 3)
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if [ ! "$DRIVERS" = "" ]; then
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echo "Loading ALSA kernel modules."
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for module in $DRIVERS; do
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modprobe $module
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done
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fi
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# If ALSA is now up, then load the mixer settings and OSS modules (if enabled):
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if [ -d /proc/asound ]; then
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if [ -x /etc/rc.d/rc.alsa-oss ]; then
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sh /etc/rc.d/rc.alsa-oss
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fi
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load_alsa_mixer
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fi
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fi
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