[ubuntu] no mic on acer aspire one

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http://ubuntuforums.org – p { margin-bottom: 0.08in; } I have installed Ubuntu Netbook 10.10 on my Acer Aspire One D250 and I have no microphone input from the built in microphone. When I check Sound Preferences, input device tab I have no microphone listed at all. In the box labeled Choose a device for sound input; the only option in the box is Internal Analog Audio Stereo. Has anyone had this problem? Any help would be greatly appreciated. (Hardware)