alsa problem with stopping playback

[Mike Gorse]

Hi Rynhardt,

I ran into a similar problem with eflite and speech-dispatcher a while 
ago.  There is a bug in alsa-lib that you might be running into.  You 
could try building alsa-lib with the following patch:

--- alsa-lib-1.0.15/src/pcm/pcm_dmix.c	2007-10-15 04:45:26.000000000 -0400
+++ alsa-lib-hg20071222/src/pcm/pcm_dmix.c	2007-12-10 20:00:04.000000000 -0500
@@ -652,9 +614,10 @@
   	if (dmix->client)
   		snd_pcm_direct_client_discard(dmix);
   	shm_sum_discard(dmix);
-	if (snd_pcm_direct_shm_discard(dmix))
-		snd_pcm_direct_semaphore_discard(dmix);
-	else
+	if (snd_pcm_direct_shm_discard(dmix)) {
+		if (snd_pcm_direct_semaphore_discard(dmix))
+			snd_pcm_direct_semaphore_up(dmix, DIRECT_IPC_SEM_CLIENT);
+	} else
  		snd_pcm_direct_semaphore_up(dmix, DIRECT_IPC_SEM_CLIENT);
  	free(dmix->bindings);
  	pcm->private_data = NULL;

or just downloading a recent alsa-lib snapshot from 
ftp://ftp.suse.de/pub/projects/alsa/snapshot/lib and building it (the fix 
is in their hg tree, but it was made post-1.0.15, so there is no release 
that includes it yet.)

Hth,

-- Mike Gorse / AIM:linvortex / http://mgorse.freeshell.org --

On Sat, 22 Dec 2007, Rynhardt P Kruger wrote:

> Hi,
>
> I have a strange problem with alsa on my grml (debian unstable) machine.
> When ever I play some music in a player and press the stop button, the
> player and speech-dispatcher locks up and I have to kill the music
> player by hand.
>
> I have tested this with audacious, rhythmbox, and  mpd (with mpc and
> other clients).
>
> I have search google for people with this problem before me, but with no
> sucsess.
>
> I hope someone can help me.
>
> Thanks in advance.
>
> Take care,
> Rynhardt
>
>
> _______________________________________________
> Blinux-list mailing list
> Blinux-list at redhat.com
> https://www.redhat.com/mailman/listinfo/blinux-list
>