[...]> I am using audacity, there it works in the meanwhile (somehow). I had to > select "Mic" as input source with alsamixer and audacity is using "OSS: > /dev/dsp " as input source and "ALSA: HDA Intel: STAC92xx Digital > (hw:0,1)" as output device.Complex programs, such as audacity, are not the right tools to troubleshoot hardware and driver problems (in my opinion). What happens if you use "arecord"?
the same noisy something as skype does.
But with skype the recorded sound is really strange. Might there be a > problem with codecs?it's not very clear, there is a grumbling in the background with clicking noise.What do you mean by "strange"? Over-amplified and distorted maybe?
Turning down "Digital" results in having nothing recorded. Also strange is that all "Capture" levels have to be quite high in addition to "Digital" that you can hear something.Try to adjust "Capture" levels with alsamixer until you get a clean recording with arecord, then you can start to worry about the additional problems involving skype. I would begin by turning down "Digtal" (that control is very touchy for my Intel ICH8 card).
Peter