--- alsa-lib-1.2.15.3.old/src/pcm/pcm.c
+++ alsa-lib-1.2.15.3/src/pcm/pcm.c
@@ -2719,7 +2719,7 @@
 
 	err = snd_config_search_definition(root, "pcm", name, &pcm_conf);
 	if (err < 0) {
-		snd_error(PCM, "Unknown PCM %s", name);
+//		snd_error(PCM, "Unknown PCM %s", name);
 		return err;
 	}
 	if (snd_config_get_string(pcm_conf, &str) >= 0)
--- alsa-lib-1.2.15.3.old/src/pcm/pcm_direct.c
+++ alsa-lib-1.2.15.3/src/pcm/pcm_direct.c
@@ -2188,7 +2188,7 @@
 	while (1) {
 		ret = snd_pcm_direct_semaphore_create_or_connect(dmix);
 		if (ret < 0) {
-			snd_error(PCM, "unable to create IPC semaphore");
+//			snd_error(PCM, "unable to create IPC semaphore");
 			goto _err_nosem_free;
 		}
 		ret = snd_pcm_direct_semaphore_down(dmix, DIRECT_IPC_SEM_CLIENT);