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Date: Sun, 10 Jan 2010 22:12:30 -0800
From: Yuri <yuri@rawbw.com>
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Subject: My microphone signal gets lost
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My Realtek ALC272 card microfon spontaneously stops working. Sometimes 
skype works fine, sometimes only very weak and distorted signal goes 
out. But microphone always sounds strong in the speakers.

Here is my mixer state when I had a problem:
Mixer vol is currently set to 96:96
Mixer pcm is currently set to 100:100
Mixer mic is currently set to 99:99
Mixer mix is currently set to 92:92
Mixer rec is currently set to 94:94
Mixer ogain is currently set to 50:50
Mixer monitor is currently set to 89:89

Driver snd_hda.ko is loaded:
hdac0: HDA Codec #0: Realtek ALC272
pcm0: <HDA Realtek ALC272 PCM #0 Analog> at cad 0 nid 1 on hdac0

What could have caused the problem?

Yuri