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MiguelitoCogito
Asked: 2020-11-13 21:44:35 +0800 CST

Ubuntu 20.10 on ThinkPad T14 (AMD). Microphone mute LED always stays on. How can I fix it or turn it off?

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I can mute and unmute the microphone just fine, but the white light on the mic mute button (F4) is on at all times. How can I make it respond to the muted/unmuted state of the microphone, or even just turn it off completely? It's very bright.

keyboard microphone thinkpad mute 20.10

1 Answers

  1. I am using ThinkPad P14s AMD, following works if you want to manually change it.

    You can test to see if it works for you:

    echo 1 | sudo tee /sys/class/leds/platform\:\:micmute/brightness

    to turn it on, and

    echo 0 | sudo tee /sys/class/leds/platform\:\:micmute/brightness

    to turn it off.

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