Sound stopped working -

[Patrick O'Callaghan]

On Fri, 2012-02-03 at 20:01 -0500, Mark LaPierre wrote:
> On 02/03/2012 12:26 PM, Bob Goodwin wrote:
> >
> > Sound stopped working after I tried a USB Sound Adapter, which
> > only lit its indicator leds.
> >
> > Normally the following should produce sound from the loudspeaker.
> > [root at box6 bobg]# aplay /usr/share/sounds/purple/login.wav
> > ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
> > aplay: main:660: audio open error: Device or resource busy
> >
> > It does not, and no sound shows on the PAVC input or output
> > bars. I'm not certain of how signal moves through the sound
> > circuit but it looks like it doesn't get from PA to ALSA input?
> >
> > I can feed a signal into the sound input jack and produce normal
> > indications on the PAVC display and sound at the loudspeaker.
> >
> > Apparently plugging in that USB "sound adapter" switched
> > something in the logic. Rebooting has not changed things? Is
> > there a default conig. file somewhere?
> >
> > I've tried everything I can think of via the alsamixer display
> > settings.
> >
> > Everything did work normally before this.
> >
> > Also, it would be helpful if there was a way to generate a
> > continuous tone or keep aplay looping continuously when messing
> > with cables under the desk, etc. I have not been able to find
> > anything to do that.
> >
> > Suggestions wanted, what do I do next?
> >
> > Bob
> > .
> >
> 
> while [ 1 <> 0 ]
> do
> aplay sound.wav
> done

while true
do
... etc.

poc