[ubuntu] 12.04 Microphone problem

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http://ubuntuforums.org – Using 12.04. My microphone is not working, so I'm unable to use my headset microphone with the program Audio-Recorder. However the microphone part of my Logitech Pro 9000 webcam works correctly. I'm working with a Dell Inspiron B130. Adding line options snd-hda-intel model=laptop-amic to alsa-base.conf as suggested in another post was made without success. Preferences output shows "Microphone Built-in Audio". The headset works correctly on my desktop (10.04). Below is audio information. lspci | grep Audio 00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Fa (Hardware)