Static with headset microphone

[ajlewis2]

I have Daru1 with Jaunty fresh install. I had this problem long ago, but it disappeared along the way with upgrades or using KDE.

I plug in a headset after a fresh boot. The sound produced from the microphone has static. If I open the mixer and change option to Front Mic and then back to Mic, the static disappears.

I do have the switches set to Headphone at all times. I have all settings on Pulse Audio. I have installed System76 drivers.

It seems like after boot and before I monkey with the mixer, I have both mics working and the static is coming from the Front Mic. Can I turn off the Front mic to see?

Under Recording in the mixer, what does "Toggle auto recording from capture" mean?

Thanks.

[thomasaaron]

Try muting the various mic options. Sounds like some sort of feedback.

[ajlewis2]

Muted the front mic in the mixer and the boost on both mic and front mic. The background is still there.

I verified that what is happening is that both the external and internal microphones are capturing when I plug in the external mic. I did this by putting sound into both mics while doing the sound capture test.

After I click the capture option from Mic to Front Mic and back to Mic, the sound is captured only in the external mic.

I did find a kernel bug on up to 2.6.30 where plugging in an external mic does not disengage the internal mic; so I assume that is where the problem lies. I did not find a fix. And now I can't find the link to the bug.

I'll just do the change from one mic to the other in the mixer when I need to use it. Hopefully it will go away again like it did before. :-)