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@小鱼 他的几b数据只显示了两秒钟就消失了,然后我用sudo apt update也是卡在11%😢
@小鱼 它显示这样 sudo apt-get update
Hit:1 https://mirrors.ustc.edu.cn/ubuntu focal InRelease Hit:2 https://mirrors.ustc.edu.cn/ubuntu focal-updates InRelease Hit:3 https://mirrors.ustc.edu.cn/ubuntu focal-backports InRelease Hit:4 https://mirrors.ustc.edu.cn/ubuntu focal-security InRelease Hit:5 http://packages.ros.org/ros2/ubuntu focal InRelease Get:6 http://packages.ros.org/ros/ubuntu focal InRelease [4,676 B] Ign:7 http://packages.ros.org/ros/ubuntu focal/main amd64 Packages Err:7 http://packages.ros.org/ros/ubuntu focal/main amd64 Packages Connection failed [IP: 140.211.166.134 80] Fetched 4,676 B in 2min 3s (38 B/s) Reading package lists... Done W: Failed to fetch http://packages.ros.org/ros/ubuntu/dists/focal/main/binary-amd64/Packages Connection failed [IP: 140.211.166.134 80] W: Some index files failed to download. They have been ignored, or old ones used instead.