[ltp] apm sound script

[Thomas Hood]

/etc/apm/event.d/alsa doesn't kill esd.  It used esdctl
to switch off esd during the suspend.

[If force_stop_modules_before_suspend=true, however,
(this is set in /etc/alsa/alsa-base.conf) then any
process that has a sound device open (esd or anything
other process) will be killed before the suspend so that
the sound drivers can be unloaded.  Usually, though,
esd is set to open a sound device only while
it needs to play a sound and to close it afterwards;
so esd won't be killed.  ThinkPad 600 users don't
need to force stop modules before suspend, though, so
this is not an issue for them.]

Thomas

--- Bibek Sahu <scorpio@dodds.net> wrote: > 
> On Mon, 5 Feb 2001, Thomas Hood wrote:
> 
> > > 	However, the system won't go to sleep if the sound device is open
> > > (I presume this is related to not putting the PCI bus to sleep, but I
> > > don't know).  The attached script takes care of this problem and mixer
> > > settings.
> > 
> > Hmm.  The woody alsa-base package already contains a script
> > "/etc/apm/event.d/alsa" which does pretty much what your script
> > does.  That script can also be instructed to kill processes
> > holding open sound devices.  Have you installed alsa-base?
> 
> 	Nope.  I held off because the debian packages were built off of ALSA
> 0.4 at last check, and I need at least 0.5.9 (preferably 0.5.10) for it to
> handle my cs461x correctly.
> 
> 	However, since it has apparently been upgraded to 0.5.10b recently,
> I'm grabbing it now.
> 
> 	The advantage of my script is that it doesn't actually kill esound,
> it simply suspends it.  Then it reactivates it after an apm resume event. 
> However, this can probably be moved to an '01esound' script. :-)
> 
> > Thomas
> 
> Thanks :-)
> 
> - Bibek
> 
> 
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