1、切换到下面目录

cd /etc/apt/sources.list.d

 

2、修改源文件

sudo vim ubuntu.sources

 

3、替换以下清华镜像源，原来的可以删除

Types: deb
URIs: https://mirrors.ustc.edu.cn/ubuntu/
Suites: noble noble-updates noble-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
 
Types: deb
URIs: https://mirrors.aliyun.com/ubuntu/
Suites: noble noble-updates noble-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

Types: deb
URIs: https://repo.huaweicloud.com/ubuntu/
Suites: noble noble-updates noble-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
 
Types: deb
URIS: https://mirrors.tuna.tsinghua.edu.cn/ubuntu/
Suites: noble noble-updates noble-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

 

4、测试，如果是从镜像源下载的，说明配置成功了

sudo apt update
sudo apt -y upgrade