ubuntu 22.04 source

1 offical source list

deb https://archive.ubuntu.com/ubuntu/ jammy main restricted universe multiverse
# deb-src https://archive.ubuntu.com/ubuntu/ jammy main restricted universe multiverse

deb https://archive.ubuntu.com/ubuntu/ jammy-updates main restricted universe multiverse
# deb-src https://archive.ubuntu.com/ubuntu/ jammy-updates main restricted universe multiverse

deb https://archive.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse
# deb-src https://archive.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse

deb https://archive.ubuntu.com/ubuntu/ jammy-backports main restricted universe multiverse
# deb-src https://archive.ubuntu.com/ubuntu/ jammy-backports main restricted universe multiverse

deb http://archive.canonical.com/ubuntu/ jammy partner
# deb-src http://archive.canonical.com/ubuntu/ jammy partner

2. tsinghua mirror source

# 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/ jammy main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse

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

When apt install ros-humble-desktop, may meet error: unmet dependency packages,

then you should change the source list. Currently, tsinghua source is available.