Re: searched the mail list but nothing w orks: audio_alsa_sink[hw:0]: Device or res ource busy

GNU Radio
1

Thanks, alex.

I don’t know what does “access the ALSA interface with any other audio
application?” mean.
I could run alsamixer and I could listen mp3 using Totem Movie Player
on Ubuntu.
So?

Qin J.

2

On Thu, 15 Sep 2011 21:26:01 -0400, king baaaase wrote:

Thanks, alex.

I don’t know what does “access the ALSA interface with any other
audio application?” mean.
I could run alsamixer and I could listen mp3 using Totem Movie
Player
on Ubuntu.
So?

I suspect that Totem uses Pulseaudio and Alsamixer works fine with
Pulseaudio. For example I use a media player called Qmmp that allows you
to select which audio interface to use. Try using something like that
and tell it to use the ALSA interface. If that doesn’t work either then
it’s not an issue with Gnuradio.

alexd

3

Thanks Alex again.
I had tried your method but it didn’t change anything.

But I found that: Some apps are working but not all.
I’m now trying receiver examples from:

For example, ssb_rx.py doesn’t work but ssb_rx_play works fine.
So I guess maybe it’s because the source code I down from oz9aec.net is
something wrong. I’m trying to figure out where the problem is.
Thanks for all and best wishes.

Qin J.

4

Hi,

try using “pulse” (without the " ) as device name, works for me on
Ubuntu 11.4

Lg,
Clemens

5

Am 2011-09-16 03:26, schrieb king baaaase:

Thanks, alex.

I don’t know what does “access the ALSA interface with any other audio
application?” mean.
I could run alsamixer and I could listen mp3 using Totem Movie Player on
Ubuntu.
So?

Ubuntu usually has Pulse Audio running, which claims and manages the
alsa devices. Try default:0 or pulse:0 as device, this is exposed by
Pulse Audio as ALSA interface.

BTW: If you have problems hearing something, check with alsamixer if all
channels are unmuted. Press “s” in alsmixer to select your sound
interface. Pulse Audio messes with the ALSA devices and sometimes leaves
some channel in a non-favourable state.

Regards

Patrick

Engineers motto: cheap, good, fast: choose any two
Patrick S.
Student of Telematik, Techn. University Graz, Austria

6

On Sat, 2011-09-17 at 00:29 +0200, Clemens Hopfer wrote:

try using “pulse” (without the " ) as device name, works for me on Ubuntu 11.4

Lg,
Clemens

Thanks, Hopfer.
Your way is much smarter and works fine.