I've tried sudo alsamixer changed values and then sudo alsactl store Every time I boot up, the default microphone volume always gets back to something like 25%.
The microphone was set to 0db according to alsamixer. I had trouble seeing how to set to a sensible level. Then I found how to set it but, but the microphone is still not working.
With Ubuntu 11.10, in the Sound options, in the Input tab were my 2 microphones, an usb one and the headset, connected to the Rear/Front Microphone. Now, 12.04, it only shows the Usb microphone. The ...