目录

尝试清除已存在的软件源信息并重新添加

重新配置ubunut镜像源,我这边用的是阿里云的源

阿里源配置

Ubuntu换阿里云源后更新提示:GPG error缺少公钥解决方法


尝试清除已存在的软件源信息并重新添加

Clear your package sources:有时候,错误的来源可能是由于旧的或者损坏的软件源信息。你可以尝试清除已存在的软件源信息并重新添加。在Ubuntu上,你可以使用以下命令来清除软件源信息:

sudo rm -rf /etc/apt/sources.list.d/* 
sudo apt update

重新配置ubunut镜像源,我这边用的是阿里云的源

阿里源配置

Vim /etc/apt/sources.list

deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse

Ubuntu换阿里云源后更新提示:GPG error缺少公钥解决方法

解决办法:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32

再次执行apt update 基本就可以了