--- alsa-lib-1.1.1.old/src/pcm/pcm.c
+++ alsa-lib-1.1.1/src/pcm/pcm.c
@@ -2263,7 +2263,7 @@
 
 	err = snd_config_search_definition(root, "pcm", name, &pcm_conf);
 	if (err < 0) {
-		SNDERR("Unknown PCM %s", name);
+//		SNDERR("Unknown PCM %s", name);
 		return err;
 	}
 	if (snd_config_get_string(pcm_conf, &str) >= 0)