Some lenovo thinkpad laptops have microphone mute hotkey button, and with a led on the button to indicate the microphone mute status. the driver for this led has not been implemented in the linux driver, so the led can't work.
Some lenovo thinkpad laptops have microphone mute hotkey button, and with a led on the button to indicate the microphone mute status. the driver for this led has not been implemented in the linux driver, so the led can't work.