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I'm running with Ubuntu 12.04 64bit on Dell Latitude E6420. The inbuilt microphone is not working, and is not listed on the sound settings dialog.

According to lspci, the device is:

00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)

I've also looked at alsamixer, and can see a "mic" and "dock mic" but fiddling with these and increasing to max amplification doesn't appear to change anything.

Note: I've raised a certification question on the same topic here:
https://answers.launchpad.net/ubuntu-certification/+question/200678

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2 Answers 2

According to Dell there is a driver that fixes this issue. The have it listed ion their website. It fixes internal microphone on E55xx series 3rd generation latitudes.

You can download it here

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up vote 0 down vote accepted

Thanks Mitch,

You will note from the linked certification question that the problem has been resolved. My theory is that it is a problem that fixed once I had installed the proprietary nvidia drivers.

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