Ubuntu更新apt源遇到报错，如何解决？

90%的原因是apt源找不到

解决方法为更换apt源为国内的源

1、备份原来的

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

2、查看版本号

lsb_release -c

Ubuntu不同的版本配置的有区别

每个版本的代号是不一样的，比如：

Ubuntu 15.04 代号为：vivid

Ubuntu 16.04代号为：xenial

Ubuntu 17.04代号为：zesty

Ubuntu 18.04代号为：bionic

Ubuntu 19.04代号为：disco

Ubuntu 20.04 代号为：focal 

Ubuntu 22.04 代号为：jammy （果酱的）

我这里是focal 

 Ubuntu 22的版本号

 

 

 

3、编辑sources.list文件

sudo vim /etc/apt/sources.list

4、输入内容 

　　4.1 Ubuntu 20版本的focal用下面这个 

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

　　4.2 Ubuntu 18版本的bionic用下面这个 

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

　　其他版本的格式要把代号focal 替换为其他的代号

　　4.3 Ubuntu 22版本jammy用下面这个（2023年3月20日补充）

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

 　　4.4 ARM版本 18.04的源

# 中科大源 - ubuntu18.04 - arm构架 【Nvidia Jetson】
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-proposed main restricted universe multiverse

 　　4.5 ARM的22.04的源

deb https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ jammy-proposed main restricted universe multiverse

• 4.6 ARM的ubuntu 20.04 的源

# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse

# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse
# # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse

deb http://ports.ubuntu.com/ubuntu-ports/ focal-security main restricted universe multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ focal-security main restricted universe multiverse

# 预发布软件源，不建议启用
# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-proposed main restricted universe multiverse
# # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-proposed main restricted universe multiverse

 

5、更新 

sudo apt update

 

参考资料 https://zhuanlan.zhihu.com/p/251009600

参考资料 https://www.cnblogs.com/tian777/p/14970043.html

2023年3月20日，补充Ubuntu22 参考资料：https://blog.csdn.net/zynaln/article/details/124373005

2023年4月18日，补充ARM版本的源 参考资料：https://zhuanlan.zhihu.com/p/618725243

2023年9月25日，补充ARM版本的20.04的源，参考资料：https://mirrors.tuna.tsinghua.edu.cn/help/ubuntu-ports/

2023年9月25日，清华源查找攻略，参考资料：https://zhuanlan.zhihu.com/p/585099340