ros2--问题

Depends

问题的出现是不小心删除了某些ros2的依赖，之后运行ros2出问题，删除干净ros2之后，再次下载ros2：

sudo apt install ros-humble-desktop

出现，依赖问题为下载的问题：

解决办法：

将ubuntu的源换为以下的源：

deb [trusted=yes] 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 [trusted=yes] 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 [trusted=yes] 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 [trusted=yes] 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

sudo apt update 

再次下载就可以了。