Any ALSA experts here?

Evan Leibovitch evan-ieNeDk6JonTYtjvyW6yDsg at
Fri Dec 19 01:16:28 UTC 2008

Hey all,

I bought a USB webcam for a computer (running Ubuntu 8.10) that includes
an integrated microphone (The Microsoft NX-6000, they still make decent

In a reverse situation from most user problems, I have the webcam
working fine but not the microphone.

The response to `arecord -l` gives:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
  Subdevices: 2/2
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
card 1: NX6000 [Microsoft� LifeCam NX-6000], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

I assume the Intel device relates to the conventional microphone jacks
on the computer.

If I try to run  `arecord -D plughw:1,0 ./RecTest-1,0.wav`, I get:

Recording WAVE './RecTest-1,0.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable
arecord: set_params:932: Broken configuration for this PCM: no
configurations available

The output of `dmesg` related to the device appears to be

[   11.815930] uvcvideo: Found UVC 1.00 device Microsoft<AE> LifeCam
NX-6000 (045e:00f8)
[   11.816287] uvcvideo: Failed to query (135) UVC control 1 (unit 0) :
-32 (exp. 26).
[   11.824524] input: Microsoft<AE> LifeCam NX-6000 as
[   11.852626] usbcore: registered new interface driver snd-usb-audio
[   11.852725] usbcore: registered new interface driver uvcvideo
[   11.852728] USB Video Class driver (v0.1.0)

Can anyone suggest what my next steps are?


- Evan
The Toronto Linux Users Group.      Meetings:
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