配置国内源

1.配置镜像源:
sudo pacman-mirrors -i -c China -m rank

2.设置 archlinuxcn 源,antergos源,arch4edu源:
sudo vi /etc/pacman.conf

[archlinuxcn] SigLevel = Optional TrustedOnly

中科大源

Server = https://mirrors.ustc.edu.cn/archlinuxcn/$arch

清华源

Server = https://mirrors.tuna.tsinghua.edu.cn/archlinuxcn/$arch

[antergos] SigLevel = TrustAll Server = https://mirrors.tuna.tsinghua.edu.cn/antergos/$repo/$arch

[arch4edu] SigLevel = TrustAll Server = https://mirrors.tuna.tsinghua.edu.cn/arch4edu/$arch

3.更新源列表
sudo pacman-mirrors -g

4.更新pacman数据库并全面更新系统
sudo pacman -Syyu

5.防止PGP签名错误

sudo pacman -S archlinuxcn-keyring sudo pacman -S antergos-keyring