I, too, have a Dell Optiplex GX620 and was experiencing the same problem. I came across this post that fixed the issue for me: http://ubuntuforums.org/showthread.php?t=603521.
-- Ubuntu 7.10 does not mute the speaker when the headphones are plugged in on the Presario C500. https://bugs.launchpad.net/bugs/148817 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
