This bug will not happen on Lenovo machines, since the headset-mic on Thinkpad is called Microphone instead of headset-mic.
This bug only happens on Dell machines which can't detect headset microphone from HW perspective, so when a headset is plugged in, a headset-mic and a headphone-mic will be showed in the sound-setting, and the problem only happens under this situation.
This bug will not happen on Lenovo machines, since the headset-mic on Thinkpad is called Microphone instead of headset-mic.
This bug only happens on Dell machines which can't detect headset microphone from HW perspective, so when a headset is plugged in, a headset-mic and a headphone-mic will be showed in the sound-setting, and the problem only happens under this situation.