slackware-current/source/ap/alsa-utils/rc.alsa
Patrick J Volkerding 5a12e7c134 Slackware 13.0
Wed Aug 26 10:00:38 CDT 2009
Slackware 13.0 x86_64 is released as stable!  Thanks to everyone who
helped make this release possible -- see the RELEASE_NOTES for the
credits.  The ISOs are off to the replicator.  This time it will be a
6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD.
We're taking pre-orders now at store.slackware.com.  Please consider
picking up a copy to help support the project.  Once again, thanks to
the entire Slackware community for all the help testing and fixing
things and offering suggestions during this development cycle.
As always, have fun and enjoy!  -P.
2018-05-31 22:41:17 +02:00

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