Зависание Alsa

TWINc · Сообщение **TWINc** » 22.05.2007 23:01

У меня на компьютере периодически зависает алса... Это случается как правило после зависания фаерфокса в котором загрузился флеш объект или после зависания вайна... само собой там и там проигрывался звук... После зависания звуковуха перестает откликаться на сигналы (видимо busy или че там), мпд виснет, мплеер виснет на стадии загрузки алсы, вайн и вообще все что использует алсу - виснет.

С чем это может быть связано? Если это решить нельзя, то как можно перезагрузить алсу?

p.s. звуковуха SB Live 5.1 с хардварным микшером.

&rew · Сообщение **&rew** » 23.05.2007 01:04

как можно перезагрузить алсу?

от дистриба зивисит. Скорее всего что-нибудь вроде

Код: Выделить всё

sudo /etc/init.d/alsa restart

или

Код: Выделить всё

sudo /etc/rc.d/init.d/alsa restart

TWINc · Сообщение **TWINc** » 23.05.2007 11:02

&rew, Ну мне тоже это первое пришло в голову... Только у меня /etc/rc.d/, но сути дела это не меняет... Так вот этот файлик не перезагружает алсу. Он только сохраняет и восстанавливает уровни микшера. В других дистрибутивах скорее всего так же.

без шансов

Код: Выделить всё

#!/bin/bash

. /etc/rc.conf
. /etc/rc.d/functions

case "$1" in
  start)
    stat_busy "Restoring ALSA Levels"
    /usr/sbin/alsactl restore
    if [ $? -gt 0 ]; then
      stat_fail
    else
      stat_done
      add_daemon alsa
    fi
   ;;
  stop)
    stat_busy "Saving ALSA Levels"
    /usr/sbin/alsactl store
    if [ $? -gt 0 ]; then
      stat_fail
    else
      stat_done
      rm_daemon alsa
    fi
   ;;
  restart)
    $0 stop
    sleep 1
    $0 start
   ;;
  *)
    echo "usage: $0 {start|stop|restart}"
esac

Juliette · Сообщение **Juliette** » 23.05.2007 11:52

Код:

#!/sbin/runscript
# $Header: /var/cvsroot/gentoo-x86/media-sound/alsa-utils/files/alsasound-1.0.10_rc2,v 1.2 2005/12/15 22:42:46 flameeyes Exp $
#
# Gentoo users: add this script to 'boot' run level.
# ==================================================
#
# alsasound         This shell script takes care of starting and stopping
#                   the ALSA sound driver.
#
# This script requires /usr/sbin/alsactl and /usr/bin/aconnect programs
# from the alsa-utils package.
#
# Copyright © by Jaroslav Kysela <perex@suse.cz>
#
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

# ChangeLog:
#
# 2003.07.29 - John Mylchreest <johnm@gentoo.org>
# Edited to support Linux kernel 2.5 and above as well as 2.4
#
# 2004.06.02 - Jeremy Huddleston <eradicator@gentoo.org>
# Rewritten for better support for built-in drivers
#
# 2004.10.29 - Jeremy Huddleston <eradicator@gentoo.org>
# Cleaned up to work better for mixed builtin/module systems
#
# 2004.11.29 - Jeremy Huddleston <eradicator@gentoo.org>
# Added save option thanks to Ben Anderson <roothorick@new.rr.com>
#
# 2005.04.21 - Jeremy Huddleston <eradicator@gentoo.org>
# Added restore option and oss option.
# Cleaned up code to use bash builtins instead of test.

alsactl=/usr/sbin/alsactl
asoundcfg=/etc/asound.state
aconnect=/usr/bin/aconnect
alsascrdir=/etc/alsa.d

opts="${opts} save restore"

depend() {
    need bootmisc localmount
    after modules isapnp coldplug hotplug
}

load_modules() {
    # List of drivers for each card.
    local DRIVERS="$(modprobe -c | grep -E "^[[:space:]]*alias[[:space:]]+snd-card-[[:digit:]]" | awk '{print $2}')"

    # Fall back on the automated aliases if we don't have ALSA configured properly...
    if [[ -z "${DRIVERS}" && ! ( -d /proc/asound && -z "$(grep ' no soundcards ' /proc/asound/cards)" ) ]] ; then
        ewarn "Could not detect custom ALSA settings.  Loading all detected alsa drivers."
        DRIVERS="$(modprobe -c | grep pci: |  awk '{ print $3 }' | grep snd.* | sort | uniq)"
        [[ -z "${DRIVERS}" ]] && eerror "Unable to find any ALSA drivers. Have you compiled alsa-drivers correctly?"
    fi

    if [[ ${ENABLE_OSS_EMUL} == "yes" ]] && modprobe -c | grep -q "snd.*oss$" ; then
        # Test for use of OSS
        local OSS="$(modprobe -l | grep "snd.*oss" | sed -e "s:\/.*\/::" -e "s:\..*::")"
        # Add oss modules to list
        local i
        for i in ${OSS}
        do
            DRIVERS="${DRIVERS} ${i}"
        done
    fi

    # We want to ensure snd-seq is loaded as it is needed for things like
    # timidity even if we don't use a real sequencer.
    DRIVERS="${DRIVERS} $(modprobe -l | grep "snd.seq\." | sed -e "s:\/.*\/::" -e "s:\..*::")"

    # We want to ensure snd-ioctl32 is loaded as it is needed for 32bit
    # compatibility
    DRIVERS="${DRIVERS} $(modprobe -l | grep "snd.ioctl32\." | sed -e "s:\/.*\/::" -e "s:\..*::")"

    local DRIVER
    for DRIVER in ${DRIVERS}
    do
        if [[ "${DRIVER}" != "off"  &&
              -z $(cut -d' ' -f1 /proc/modules | egrep "^${DRIVER}\$") &&
              -z $(cut -d' ' -f1 /proc/modules | egrep "^${DRIVER//-/_}\$") ]] ; then
            ebegin "  Loading: ${DRIVER}"
            /sbin/modprobe ${DRIVER}
            eend $?
        fi
    done

    sleep 1

    if [[ -f /proc/asound/seq/drivers ]] ; then
        local SEQUENCERS="$(awk -F, '$2~/^empty$/ {print $1}' /proc/asound/seq/drivers)"
        local SEQUENCER
        for SEQUENCER in ${SEQUENCERS}
        do
            if [[ -z $(cut -d' ' -f1 /proc/modules | egrep "^${SEQUENCER}\$")  &&
                  -z $(cut -d' ' -f1 /proc/modules | egrep "^${SEQUENCER//-/_}\$") ]] ; then
                ebegin "  Loading: ${SEQUENCER}"
                /sbin/modprobe ${SEQUENCER}
                eend $?
            fi
        done
    fi

    for DRIVER in ${DRIVERS}
    do
        local TMP=${DRIVER##snd-}
        TMP=${TMP##snd_}
        if [[ -x "${alsascrdir}/${TMP}" ]] ; then
            ebegin "  Running: ${alsascrdir}/${TMP}"
            ${alsascrdir}/${TMP}
            eend $?
        fi
    done

    if [[ ! -d /proc/asound || -n "$(grep ' no soundcards ' /proc/asound/cards)" ]] ; then
        eerror "ERROR: Failed to load necessary drivers"
    fi
}

unload_modules() {
    local LOADED_MODULES="$(/sbin/lsmod | grep -E "^snd" | awk '{print $1}')"
    local MODULE
    for MODULE in ${LOADED_MODULES}
    do
        /sbin/rmmod ${MODULE} >& /dev/null
    done
    /sbin/rmmod soundcore >& /dev/null
    /sbin/rmmod gameport >& /dev/null

    # Return success if the modules are unloaded
    [[ -z "$(/sbin/lsmod | grep -E "^snd" | awk '{print $1}')" ]]
}

terminate() {
    #
    # Kill processes holding open sound devices
    #
    # DEVS=`find /dev/ -follow -type c -maxdepth 1 -print 2>/dev/null | xargs ls -dils | grep "1*1[46]," | cut -d: -f2 | cut -d" " -f2; echo /proc/asound/dev/*`
    local ossdevs="/dev/admmidi? /dev/adsp? /dev/amidi? /dev/audio* /dev/dmfm* \
            /dev/dmmidi? /dev/dsp* /dev/dspW* /dev/midi0? /dev/mixer? /dev/music \
            /dev/patmgr? /dev/sequencer* /dev/sndstat"
    local alsadevs="/proc/asound/dev/* /dev/sound/* /dev/snd/*"
    fuser -k ${ossdevs} ${alsadevs} >& /dev/null

    #
    # remove all sequencer connections if any
    #
    [[ -f /proc/asound/seq/clients && -x ${aconnect} ]] && ${aconnect} --removeall
}

restore_mixer() {
    if [[ ${RESTORE_ON_START} == "no" ]] ; then
        return 0
    fi

    restore
}

restore() {
    ebegin "Restoring Mixer Levels"

    local val=0

    if [[ ! -r ${asoundcfg} ]] ; then
        ewarn "No mixer config in ${asoundcfg}, you have to unmute your card!"
    elif [[ -x ${alsactl} ]] ; then
        local CARDS="$(cat /proc/asound/cards | awk '/: / { print $1 }')"
        local CARDNUM
        for CARDNUM in ${CARDS}
        do
            [[ -e /dev/snd/controlC0 ]] || sleep 2
            [[ -e /dev/snd/controlC0 ]] || sleep 2
            [[ -e /dev/snd/controlC0 ]] || sleep 2
            [[ -e /dev/snd/controlC0 ]] || sleep 2
            ${alsactl} -f ${asoundcfg} restore ${CARDNUM} || ewarn "Errors while restoring defaults, ignoring"
        done
    else
        eerror -e "ERROR: Cannot find alsactl, did you forget to install media-sound/alsa-utils?"
        val=1
    fi

    eend ${val}
    return ${val}
}

save() {
    ebegin "Storing ALSA Mixer Levels"

    local val=0

    if [[ -x ${alsactl} ]] ; then
        ${alsactl} -f ${asoundcfg} store
        val=$?
    else
        eerror -e "ERROR: Cannot find alsactl."
        val=1
    fi

    eend ${val}
    return ${val}
}

start() {
    if [[ -f /proc/modules ]] ; then
        ebegin "Loading ALSA modules"
        if load_modules ; then
            eend 0
        else
            eend 1
            return 1
        fi
    fi

    if [[ ${RESTORE_ON_START} == "yes" ]]; then
        restore_mixer
    fi
}

stop() {
    if [[ ! -d /proc/asound ]] ; then
        eerror "ALSA is not loaded"
        return 0
    fi

    if [[ ${SAVE_ON_STOP} == "yes" ]]; then
        save
    fi

    ebegin "Unloading ALSA"
    terminate
    eend 0

    if [[ -f /proc/modules ]]; then
        ebegin "Unloading ALSA modules"
        if unload_modules; then
            eend 0
        else
            eend 1
        fi
    fi
}

/etc/init.d/alsasound

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