[Pkg-alsa-devel] hardware mixing breakage

[Thomas Hood]

--=-+pC9nyJBntLGfUc8lV1p
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

On Tue, 2004-09-07 at 23:21, Stefan Kombrink wrote:
> 1.) 
> ("alsa stop" doesn't unload the modules / "alsa start" doesn't load
> the modules)  Is it right that modprobe should take care of that?


Yes.  Module loading is something that (normally) should be left up
to the module loader.

In the latest alsa packages, the initscript stop method only saves
the mixer levels.

If you want to remove snd-* modules then you can always use the
force-stop method.

I attach the latest alsa initscript from CVS so you can help us
test it.  :)

I don't know how to solve your other problem.  Maybe one of the
other guys has ideas.

--
Thomas

--=-+pC9nyJBntLGfUc8lV1p
Content-Disposition: attachment; filename=alsa-base.init
Content-Type: application/x-shellscript; name=alsa-base.init
Content-Transfer-Encoding: 7bit

#!/bin/sh
#
# ALSA initscript
#

set -e

PATH=/usr/local/sbin:/sbin:/usr/sbin:/usr/local/bin:/bin:/usr/bin

if [ "$(id -u)" != "0" ] && [ "$1" != "--help" ] &&
   [ "$1" != "help" ] && [ ! -z "$1" ]; then
    echo "$0: To $1 ALSA, you must be root."
    exit 1
fi

# Default settings
alsactl_store_on_shutdown="always autosave"
runlevels_save='[2-5]'

[ -f /etc/default/alsa ] && . /etc/default/alsa

start()
{
	# ALSA mixer settings should be restored via the module loader
#	printf "Restoring ALSA mixer settings..."
#	sleep 5
#	if alsactl restore > /dev/null 2>&1; then
#	    echo "done."
#	    return 0
#	else
#	    echo "failed. Run 'alsactl restore' manually to view error messages."
#	    return 1
#	fi
}

stop()
{
	if [ "$alsactl_store_on_shutdown" != "never autosave" ]; then
	    if runlevel | grep -E "^$runlevels_save " > /dev/null 2>&1 \
	    || runlevel | grep -E " $runlevels_save\$" > /dev/null 2>&1; then
		printf "Storing ALSA mixer settings..."
		if alsactl store > /dev/null 2>&1; then
		    sleep 1
		    echo "done."
		    return 0
		else
		    echo "failed."
		    return 1
		fi
	    fi
	fi
}

force_stop()
{
	set_procs_using_sound() {
	    procs_using_sound="$(lsof +D /dev -F rt | awk '/^p/ {pid=$1} /^t/ {type=$1} /^r0x(74|e)..$/ && type == "tCHR" {print pid}' | cut -c 2- | uniq)"
	}
	set_procs_using_sound
	if [ "$procs_using_sound" ] ; then
	    printf "Terminating processes: "
	    for attempt in 1 2 3 ; do
		printf "${procs_using_sound}..."
		kill $procs_using_sound || :
		sleep 1
		set_procs_using_sound
		[ "$procs_using_sound" ] || break
	    done
	    # Either no more procs using sound or attempts ran out
	    if [ "$procs_using_sound" ] ; then
		printf "(with SIGKILL) ${procs_using_sound}..."
		kill -9 $procs_using_sound || :
		sleep 1
	    fi
	    set_procs_using_sound
	    if [ "$procs_using_sound" ] ; then
		echo "failed."
		return 1
	    fi
	    echo "done."
	fi
	stop || :
	rmmod=""
	case "$(modprobe --version 2>&1)" in
	    modprobe*) rmmod="rmmod -r" ;;
	    module-init-tools*) rmmod="modprobe -r" ;;
	esac
	printf "Unloading sound driver modules..."
	for i in $(lsmod | awk '/^snd/ {print $1}'); do
	    $rmmod $i >/dev/null 2>&1 || :
	done
	if [ "$(lsmod | awk '/^snd/ {print $1}')" ] ; then
	    echo "failed."
	    return 1
	else
	    echo "done."
	    return 0
	fi
}

case "$1" in
    start) start ;;
    stop) stop ;;
    restart) stop ; start ;;
    reload) stop && start ;;
    force-stop) force_stop ;;
    force-restart) force_stop ; start ;;
    force-reload) force-stop && start ;;
    *)
	echo "Usage: /etc/init.d/alsa {start|stop|restart|reload|force-stop|force-reload}" >&2
	exit 3
	;;
esac

--=-+pC9nyJBntLGfUc8lV1p--