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  1. #1

    Question webcam integrated microphone problem

    Logitech webcam C170 integrated microphone is not working with Debian 6.0.5
    The webcam integrated microphone is working on the same machine with Ubuntu 10.04.4

    Debian 6.0.5 / Kernel 2.6.32-5-686 / ALSA 1.0.23 / USB Webcam Logitech C170 /
    basic audio :
    0 [NVidia]: HDA-Intel - HDA NVidia HDA NVidia at 0xfb100000 irq 23
    1 [C170]: USB-Audio - Webcam C170 Webcam C170 at usb-0000:00:02.1-4, high speed

    $ arecord -l


    card 1: C170 [Webcam C170], device 0: USB Audio [USB Audio]
    Subdevices: 1/1
    Subdevice #0: subdevice #0

    $ arecord hw:1,0 -d 10 /tmp/test-mic.wav
    $ aplay /tmp/test-mic.wav
    gives : no sound


    Could configure Skype to hook up the Webcam's microphone, but the sound recorder stopped working because Skype changed some ALSA parameters.

    How can I make the Webcam's microphone to the default device for "all" applications. Switching ALSA parameters for each application is a bit boring. Thanks for answers.

  2. #2

    Found the following solution :

    The following ALSA configuration setting uses the default sound card as playback device (hw:0,0) and sets hw:1,0 to become the default capture device.

    pcm.!default {
    type asym
    playback.pcm {
    type plug
    slave.pcm "hw:0,0"
    capture.pcm {
    type plug
    slave.pcm "hw:1,0"

    Editing the "~/.asoundrc" for a specific user
    Editing the "/etc/asound.conf" for system-wide settings

    Restart ALSA (after editing ): /etc/init.d/alsa-utils restart


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