I am running Ubuntu 10.10 on an Acer 4810t, which has a problem with the microphone.
According to Ubuntu Help Community I need to completely mute the left channel of the mic using alsamixer, which I have done. However, about every 30 seconds, the left channel returns to its default volume.
As long as that left channel stays muted, the sound recorder does pick up some sound. Any ideas about why it won’t stay as set?