[alsa-devel] Recording support for Roland SD-50 USB Audio device

[Daniel Mack]

On 06/04/2014 03:10 PM, François Isabelle wrote:
> Le 04/06/2014 08:30, Daniel Mack a écrit :
>> What exactly is the problem and how did you test?
> 
> I tried the "input" view meeter in pavucontrol first.
> 
> And this is what I get when trying the record from the command line:
> 
> isabellf at brahms:~/alsa-driver$ LC_ALL=C  arecord -Dplughw:3 file.wav
> arecord: main:722: audio open error: Device or resource busy

Then some other application has control over the device, most probably
pulseaudio or JACK. Check if prepending arecord with "pasuspender --" helps.

> I also checked the alasmixer capture parameters it says:
>     This sound device does not have any capture controls.

That can well be. alsamixer only lists controls that are exposed by the
hardware, and there might well be none.


Daniel