Solve the problem that the M1/M2 chip Mac cannot control the volume and brightness of the external display

environment

Computer:
2020 M1 Core Macbook
13-inch, M1, 2020

Install MonitorControl software

Open the terminal and enter the following command to install MonitorControl

brew install MonitorControl

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set up

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Open the software MonitorControl
to set the brightness of the external display
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Origin blog.csdn.net/gusijin/article/details/130255365