Re: possible problems with rc6 aplay

[Takashi Iwai <tiwai@suse.de>]

At Mon, 16 Dec 2002 08:49:35 -0500,
Paul Davis wrote:
> 
> >Martin,
> >   That might certainly be an answer. How would this amixer switch get
> >st in the first place? I wouldn't mind doing it by hand once as long as
> >it was then loaded after that.
> 
> what you want is a short startup script (typically in somewhere under
> /etc/rc.d, but unfortunately this varies somewhat from linux
> distribution to linux distribution). it would look like this:
> 
> 	#!/bin/sh
> 	
> 	HAMMERFALL=0 # change to match the card number of the
> 		     # Hammerfall, as shown in /proc/asound/cards
>         CLOCK_MODE=0 # auto-sync, the default condition.
> 	CLOCK_MODE_NAME="autosync"
> 
> 	case $1 in
> 	     start) if [ -f /some/path/to/this-host-is-master ] ; then
> 		        CLOCK_MODE=1
> 			CLOCK_MODE_NAME="master"
> 		    else
> 		        CLOCK_MODE=2
> 			CLOCK_MODE_NAME="word clock"
> 		    fi  
> 		    echo "Setting Hammerfall to $CLOCK_MODE_NAME mode ..."
> 		    amixer -c $HAMMERFALL cset \
> 			    iface=PCM,name='Sync Mode',numid=7 $CLOCK_MODE
>         esac			    
> 	exit 0
> 
> then, just create the file /some/path/to/this-host-is-master on one
> machine, and it will automatically set the Master switch when it boots
> up. the other machine will remain in AutoSync mode - if they are
> connected via word clock, you probably want to change that as well,
> using the same script.

the standard alsasound init script can call a card-dependent script
under /etc/alsa.d as the last initialization phase.  for example, you
can create the file above as /etc/alsa.d/rme9652 (with exec bit).  as
other examples, you can load the soundfont on this script for emu10k1
or sbawe.

many distributions use /etc/sysconfig/XXX file for a local
configuration, btw.  in this style, create a file
(e.g. /etc/sysconfig/rme9652) containing the variable definitions such
like:

	HAMMERFALL=0
	CLOCK_MODE=1
	CLOCK_MODE_NAME="master"

and call ". /etc/sysconfig/rme9652" at the beginning of the script.


ciao,

Takashi


-------------------------------------------------------
This sf.net email is sponsored by:
With Great Power, Comes Great Responsibility 
Learn to use your power at OSDN's High Performance Computing Channel
http://hpc.devchannel.org/