I know I have seen this hased a few times... but never seen an answer.&nbsp; Occasionally something grabs the ALSA sound driver and doesn&#39;t let go;&nbsp; I don&#39;t appear to have any applications that are using audio open, yet I still get this message:<br>
<br>r@pal: ~$ aplay flugel.wav <br>ALSA lib pcm_dmix.c:864:(snd_pcm_dmix_open) unable to open slave<br>aplay: main:545: audio open error: Device or resource busy<br><br>So why isn&#39;t there a way to find what has tied up the audio device?&nbsp; If there is, great, now I can move on.&nbsp; <br>
<br>I know multiple devices are supposed to be able to use the ALSA device at the same time, but I assume that older applications weren&#39;t implemented to take advantage of this feature, which is why I am receiving this error, no?&nbsp; I have always wondered about this; wikipedia says one of ALSA&#39;s main goals is &quot;graceful handling of multiple sound devices in a system&quot;, but I have never known this to be the case.<br>
<br>Time to restart my computer so I can use audio again..<br><br>regards,<br>Rich<br>