When ubuntu16.04 with X86_64 architecture replaces the system source update, it prompts E: Unable to download https://mirrors.tuna.tsinghua.edu.cn/ubuntu/dists/xenial/main/binary-arm64/Packages 404 Not Found
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- When ubuntu16.04 with X86_64 architecture replaces the system source update, it prompts E: Unable to download https://mirrors.tuna.tsinghua.edu.cn/ubuntu/dists/xenial/main/binary-arm64/Packages 404 Not Found
I. Introduction
X86_64的Ubuntu16.04系统更换了清华源，sudo apt update时提示一些包仍然无法下载
系统换源方法为：①打开sources.list ②加入源码
sudo gedit /etc/apt/sources.list
It is best to change sources.list to have executable permissions, otherwise it will report that the source cannot be used safely for updates.
sudo chmod 777 /etc/apt/sources.list
Tsinghua Source is recommended, the following are
Tsinghua source_amd architecture
Tsinghuayuan_arm architecture
根据自己的Ubuntu系统选择对应架构和版本
2. Cause of error
1. Multi-architecture support is set up for ARM, but our platform is based on X86 architecture
3. Solution
1. View the system architecture
arch
dpkg --print-foreign-architectures
2. Remove ARM architecture support
sudo dpkg --remove-architecture arm64
It prompts that arm is still used by the database and cannot be removed.
解决方法：
sudo rm -rf /var/lib/apt/lists/*
sudo apt-get remove .*:arm64
At this time, execute the removal command again, sudo apt update and it will be OK!
sudo dpkg --remove-architecture arm64
4. Summary
Of course, if it is an NVIDIA Jetson series motherboard and the Ubuntu system with ARM architecture is flashed, it may prompt that some AMD packages cannot be downloaded during the update. The principle is the same.