That toggle is there in case you want to route microphone input directly to your speakers. There exists one for each sound source, so you can mute, unmute, and set volumes for CD playback, line-in, and the microphone, etc.
Since it's doing what it's actually supposed to do, I'm marking this bug as invalid. ** Changed in: linux-source-2.6.22 (Ubuntu) Status: Triaged => Invalid -- Intel 82801G (ICH7) has constant noise with microphone unmuted https://bugs.launchpad.net/bugs/133177 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs