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Old 09-07-2013, 04:39 AM   #1
fargris
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Conflicting sound HW?


I have recently bought a webcam - "Novatek Microelectronics Corp." (from lsusb); on the label it says TWHD-211. I have a desktop from Dell (Optiplex 3010) and the soundcard is "Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)" (from lspci).

Before I got the webcam, the sound worked fine, straight out of the box - I'm running Debian 7, 64 bit and KDE. I hade some trouble with the microphone, but got it to work by going into alsamixer and unmuting it.

I then got the webcam and got it work with skype and google hangouts; so far so good. That was yesterday evening - I used google hangouts for a couple of hours yesterday, and before that, skype. Now, wen I boot up, the speakers are dead and the microphone is too.

When I look in Phonon, I see the speakers should be fine; but no sound when I press the test button. The "Audio recording" tab shows two input devices, the built-in sound card and the webcam's microphone; the built-in one is grayed out and the webcam isn't. Recording doesn't work. If I unplug the webcam and reboot, the webcam still shows up, but grayed out. And still no playback/recording. And alsamixer seems to be correct.

What is going on here?
 
Old 09-07-2013, 08:57 AM   #2
business_kid
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Don't know. Try opening /etc/asound.state for editing and see if anything is switched off. It might work better if you booted with no webcam, plugged in the webcam, and then loaded it's module (at a guess, uvcvideo).
 
Old 09-07-2013, 10:25 AM   #3
fargris
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Hmm, I don't have /etc/asound.state - or indeed anything called asound, it seems.

When I reboot without the webcam, the speakers work, and so does the microphone, but in phonon both the built-in sound card and the webcam are listed in grey. Something here is not working right, I feel. Should it not be possible to go in and manually disable the webcam's microphone and enable the sound card's? This is possible in Windows, or so I'm told.

Last edited by fargris; 09-07-2013 at 10:27 AM.
 
Old 09-07-2013, 11:37 AM   #4
business_kid
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Maybe the issue is with phonon. Do other things see it? (skype, for instance).
 
  


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