Microphone LED on a T14 thinkpad (AMD) and ubuntu


How to fix the annoying always on microphone mute LED on a t14 thinkpad

On ubuntu 20.04 on a thinkpad T14 1st gen AMD, the microphone led on the internal keyboard is constantly on, no matter if the microphone is on or off, which becomes annoying when typing in dark environments.


Call alsamixer on the command line, select the second sound card, and select “Off” for the Mic Mute-LED. This means, the LED is constantly turned off, which is still not ideal, but so much better than constantly on.