Re: Microphone not picking any sound -- Debian Testing/Wheezy (KDE 4.6.5)

[Florian Kulzer <debian-lists@florian-kulzer.eu>]

On Thu, Feb 23, 2012 at 17:11:51 +0530, Arun Khan wrote:
> Debian Wheezy AMD 64 weekly build 13/Feb/2012
> KDE 4.6.5 (default) desktop
> Kernel 3.2.0 (stock from the weekly build)
> on Toshiba C640 laptop.
> 
> alsamixergui shows - audio device is shown as Intel Conexant CX20590.
> I can hear sound from the built in speakers as well as from the head phone jack.
> Through Kmix gui, I have boosted the Mic to 40dB.
> 
> However, the mic does not pick up anything.  I am unable to use
> services like linphone and skype.
> 
> FWIW, in KDE>System Settings>Sound and Video Configurations> Device
> Preference> Audio Capture
> Communications shows the "test" button greyed out whereas the same
> system when I boot with Linux Mint 12 KDE RC (Live Session), the
> button is not greyed out.
> 
> Any pointers to get the MIC input working highly appreciated.

Please post the output of the following four commands:

  lspci -knn | grep -iA2 audio
  cat /proc/asound/cards
  arecord -l
  amixer | perl -F'\n(?=\S)' -na0 -e 'foreach(@F){if(/capture/i){print"$_\n"}}'

-- 
Regards,            |
          Florian   | http://www.florian-kulzer.eu