How to reload sound modules?

Question

I'm using alsa + pulse sound system. I also have Openbox as a stand-alone WM and lightDM,  but the same thing occurs on my debian testing + gnome. I've been trying to solve this issue for several days but with no success.
Below is the output from alsa-info.sh script
http://www.alsa-project.org/db/?f=9f32f … f7cdddcc40
Installed packages:
morfik:~$ pacman -Qs alsa
local/alsa-lib 1.0.27-1
An alternative implementation of Linux sound support
local/alsa-plugins 1.0.27-1
Extra alsa plugins
local/alsa-utils 1.0.27-4
An alternative implementation of Linux sound support
local/pulseaudio-alsa 2-2
ALSA Configuration for PulseAudio
morfik:~$ pacman -Qs pulse
local/libao 1.1.0-3
Cross-platform audio output library and plugins
local/libcanberra-pulse 0.30-3
PulseAudio plugin for libcanberra
local/libpulse 3.0-3
A featureful, general-purpose sound server (client library)
local/paprefs 0.9.10-2
A simple GTK-based configuration dialog for PulseAudio
local/pavucontrol 2.0-1
A GTK volume control tool for PulseAudio
local/pulseaudio 3.0-3
A featureful, general-purpose sound server
local/pulseaudio-alsa 2-2
ALSA Configuration for PulseAudio
Everything works fine until hibernation. After my system goes up, one speeker (of 4) is missing, I mean that 3 others play sound well, but the rear-left is silent. I don't know what is wrong, but on debian I can deal with it by reloading sound modules:
$ pulseaudio -k
# alsa force-reload
$ pulseaudio -D
But unfortunately there is no such a thing like "alsa" in Arch. When I type alsa force-reload on my debian, I get this:
root:/# alsa force-reload
Unloading ALSA sound driver modules: snd-ca0106 snd-seq-midi snd-seq-midi-event snd-rawmidi snd-ac97-codec snd-pcm snd-page-alloc snd-seq snd-seq-device snd-timer.
Loading ALSA sound driver modules: snd-ca0106 snd-seq-midi snd-seq-midi-event snd-rawmidi snd-ac97-codec snd-pcm snd-page-alloc snd-seq snd-seq-device snd-timer.
I tried to change a little pulse settings in /etc/pusle/daemon.conf but this does nothing. Now the file looks like this:
daemonize = yes
allow-exit = yes
use-pid-file = yes
exit-idle-time=0
resample-method=speex-float-0
default-sample-rate = 44100
alternate-sample-rate = 48000
default-sample-channels = 4
default-channel-map = front-left,front-right,rear-left,rear-right
I can't use hibernation because after my system comes to life, I have to reboot it in order to make sound work properly.
I don't know what info I should provide, so if you want to know something more about configuration of my pc, feel free and ask, I'll post the info as soon as possible.

Answer 1

Raynman -- thanks for the hint. I looked for the alsa script on debian, and it exists, so I moved it to arch.
This is the script:
#!/bin/sh
# alsa-base control script
# Description: Used to load and unload ALSA modules and
# restore and store mixer levels. There is no
# longer any need to run this script on bootup
# or shutdown. It is now moved to /usr/sbin.
set -e
# Exit if alsa-base package is not installed
[ -f /etc/modprobe.d/alsa-base.conf ] || exit 0
MYNAME=/usr/sbin/alsa
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# Default values of variables in /etc/default/alsa
force_unload_modules_before_suspend=""
[ -f /etc/default/alsa ] && . /etc/default/alsa
# $* MESSAGE
warn() { echo "${MYNAME}: Warning: $* " >&2 ; }
# Attempt to create /var/run/alsa if it is absent.
# Return true if /var/run/alsa exists after this attempt,
# otherwise false.
check_run_dir()
[ -d /var/run/alsa ] && return 0
# We have no business creating /var/run if it doesn't exist
if ! [ -d /var/run ] ; then
warn "Could not create /var/run/alsa/ because /var/run/ is not present."
return 1
fi
if ! mkdir --mode=755 /var/run/alsa ; then
warn "Failed to create /var/run/alsa/."
return 1
fi
[ -d /var/run/alsa ] && return 0
return 1
echo_procs_using_sound()
for i in /proc/[0-9]*/fd/* ; do
var="$(readlink $i)"
if test x"$var" != x"${var#/dev/snd/pcm}" ; then
IFS=/; set -- $i; unset IFS; echo $3
fi
done
# $* [PID]...
echo_with_command_names()
[ "$1" ] || return 0
echo $( \
ps --no-headers -o "%p %c" "$@" \
| sed -e 's/\([0-9][0-9]*\) \(.*\)/\1(\2)/' \
kill_procs_using_sound()
procs_using_sound="$(echo_procs_using_sound)"
if [ "$procs_using_sound" ] ; then
echo -n "Terminating processes:"
for attempt in 1 2 3 4 ; do
echo -n " ${procs_using_sound}"
kill $procs_using_sound || :
sleep 1
procs_using_sound="$(echo_procs_using_sound)"
[ "$procs_using_sound" ] || break
done
# Either no more procs using sound or attempts ran out
if [ "$procs_using_sound" ] ; then
echo -n " (with SIGKILL:) ${procs_using_sound}"
kill -9 $procs_using_sound || :
sleep 1
fi
procs_using_sound="$(echo_procs_using_sound)"
if [ "$procs_using_sound" ] ; then
echo " (failed: processes still using sound devices: $(echo_with_command_names $procs_using_sound))."
return 1
fi
echo "."
fi
return 0
# $* MODULE-NAME [MODULE-NAME]... | "all"
unload_modules()
procs_using_sound="$(echo_procs_using_sound)"
if [ "$procs_using_sound" ] ; then
warn "Processes using sound devices: $(echo_with_command_names $procs_using_sound)."
fi
if check_run_dir ; then
:> /var/run/alsa/modules-removed
else
warn "Not keeping list of removed modules because /var/run/alsa is absent.
It will not be possible automatically to reload these modules."
fi
echo -n "Unloading ALSA sound driver modules:"
[ -d /proc/asound ] || { echo " (none loaded)." ; return 0 ; }
echo_snd_modules_loaded()
lsmod \
| sed -n -e 's/^\(snd[-_][^[:space:]]*\)[[:space:]].*/\1/p' \
| sed -e 's/_/-/g'
for FSMBS in $* ; do
MODULES_TO_REMOVE=""
SND_MODULES_LOADED="$(echo_snd_modules_loaded)"
case "$FSMBS" in
all)
MODULES_TO_REMOVE="$SND_MODULES_LOADED"
snd_*|snd-*)
FSMBS="$(echo "$FSMBS" | sed -e 's/_/-/g')"
for M in $SND_MODULES_LOADED ; do
if [ "$FSMBS" = "$M" ] ; then
MODULES_TO_REMOVE="$FSMBS"
break
fi
done
esac
[ "$MODULES_TO_REMOVE" ] || continue
if [ -d /var/run/alsa ] ; then
echo "$MODULES_TO_REMOVE" >> /var/run/alsa/modules-removed
fi
for M in $MODULES_TO_REMOVE ; do
echo -n " ${M}"
modprobe -r "$M" >/dev/null 2>&1 || :
done
done
if [ -f /var/run/alsa/modules-removed ] ; then
MODULES_STILL_LOADED="$(echo_snd_modules_loaded | grep -F -f /var/run/alsa/modules-removed)"
MODULES_STILL_LOADED="$(echo $MODULES_STILL_LOADED)"
else
MODULES_STILL_LOADED=""
fi
if [ "$MODULES_STILL_LOADED" ] ; then
echo " (failed: modules still loaded: ${MODULES_STILL_LOADED})."
return 1
else
echo "."
return 0
fi
# $* MODULE-NAME [MODULE-NAME]... | "all"
force_unload_modules()
kill_procs_using_sound || :
unload_modules "$@" || return 1
return 0
load_unloaded_modules()
LUM_RETURNSTATUS=0
MODULES_TO_LOAD=""
[ -d /var/run/alsa ] || warn "Directory /var/run/alsa is absent."
echo -n "Loading ALSA sound driver modules:"
[ -f /var/run/alsa/modules-removed ] && MODULES_TO_LOAD="$(echo $(cat /var/run/alsa/modules-removed))"
[ "$MODULES_TO_LOAD" ] || { echo " (none to reload)." ; return $LUM_RETURNSTATUS ; }
echo -n " $MODULES_TO_LOAD"
for MDL in $MODULES_TO_LOAD ; do
modprobe $MDL || LUM_RETURNSTATUS=1
done
case "$LUM_RETURNSTATUS" in
0) echo "." ;;
*) echo " (failed)." ;;
esac
return $LUM_RETURNSTATUS
case "$1" in
unload)
unload_modules all || exit $?
reload)
EXITSTATUS=0
unload_modules all || EXITSTATUS=1
load_unloaded_modules || EXITSTATUS=1
exit $EXITSTATUS
force-unload)
force_unload_modules all || exit $?
force-reload)
EXITSTATUS=0
force_unload_modules all || EXITSTATUS=1
load_unloaded_modules || EXITSTATUS=1
exit $EXITSTATUS
suspend)
case "$force_unload_modules_before_suspend" in
""|false) : ;;
all|true) force_unload_modules all || exit $? ;;
*) force_unload_modules $force_unload_modules_before_suspend || exit $? ;;
esac
resume)
case "$force_unload_modules_before_suspend" in
""|false) : ;;
*) load_unloaded_modules || exit $? ;;
esac
echo "Usage: $MYNAME {unload|reload|force-unload|force-reload|suspend|resume}" >&2
exit 3
esac
It requires two other files in /etc/modprobe.d/ . I also moved them from debian:
alsa-base-blacklist.conf
# Uncomment these entries in order to blacklist unwanted modem drivers
# blacklist snd-atiixp-modem
# blacklist snd-intel8x0m
# blacklist snd-via82xx-modem
# Comment this entry in order to load snd-pcsp driver
blacklist snd-pcsp
alsa-base.conf
# autoloader aliases
install sound-slot-0 /sbin/modprobe snd-card-0
install sound-slot-1 /sbin/modprobe snd-card-1
install sound-slot-2 /sbin/modprobe snd-card-2
install sound-slot-3 /sbin/modprobe snd-card-3
install sound-slot-4 /sbin/modprobe snd-card-4
install sound-slot-5 /sbin/modprobe snd-card-5
install sound-slot-6 /sbin/modprobe snd-card-6
install sound-slot-7 /sbin/modprobe snd-card-7
# Cause optional modules to be loaded above generic modules
install snd /sbin/modprobe --ignore-install snd && { /sbin/modprobe --quiet snd-ioctl32 ; /sbin/modprobe --quiet snd-seq ; : ; }
install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi && { /sbin/modprobe --quiet snd-seq-midi ; : ; }
install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && { /sbin/modprobe --quiet snd-emu10k1-synth ; : ; }
# Keep snd-pcsp from beeing loaded as first soundcard
options snd-pcsp index=-2
# Keep snd-usb-audio from beeing loaded as first soundcard
options snd-usb-audio index=-2
# Prevent abnormal drivers from grabbing index 0
options bt87x index=-2
options cx88_alsa index=-2
options snd-atiixp-modem index=-2
options snd-intel8x0m index=-2
options snd-via82xx-modem index=-2
options snd-ca0106 index=0
options snd-hda-intel index=1
After hibernation, the script provides sound as expected. I also notticed that I can reload only snd-ca0106 and the sound comes back.
Now I have to make a .service file that could make my sound work. But I need more info how to do so.