Comment 17 for bug 453966

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Luca Invernizzi (invernizzi) wrote : Re: dell xps m1330 regression, integrated digital microphone no longer working [karmic koala]

As I'm experiencing this bug too, on an xps m1330n, i did a little bit of research.
I tried to follow the walkthrough in post #7 but that failed, as I couldn't change the mic input.
I then reverted alsa-utils and alsa base to the first karmic version (1.0.18 for both of them) and, while the mic was not functioning straight away, I followed the forementioned walkthrough which resulted in a **functioning** mic.

It therefore seems an alsa related bug.
I will try to narrow down the problem tonight.

ps: i downloaded alsa-base and alsa-utils from https://edge.launchpad.net/ubuntu/karmic/amd64/alsa-base/ and