0. modify system soft source(reference:https://mirrors.tuna.tsinghua.edu.cn/help/raspbian/)
deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main non-free contrib rpi
deb https://mirrors.tuna.tsinghua.edu.cn/raspberrypi/ buster main
1. modify /boot/config.txt
sudo vi /boot/config.txt
2. modify line:
hdmi_group=2 (使用显示器而不是TV)
hdmi_mode=82 (1920x1080 60fps)
3. sudo apt update && sudo apt upgrade
标签：set,cn,hdmi,mirrors,sudo,modify,edu,raspberry,display From： https://www.cnblogs.com/guochaoxxl/p/17054641.html