我有一个正常的来源列表：
$ cat /etc/apt/sources.list
deb http://ports.ubuntu.com/ xenial main restricted universe multiverse
deb-src http://ports.ubuntu.com/ xenial main restricted universe multiverse
deb http://ports.ubuntu.com/ xenial-updates main restricted universe multiverse
deb-src http://ports.ubuntu.com/ xenial-updates main restricted universe multiverse
deb http://ports.ubuntu.com/ xenial-security main restricted universe multiverse
deb-src http://ports.ubuntu.com/ xenial-security main restricted universe multiverse
deb http://ports.ubuntu.com/ xenial-backports main restricted universe multiverse
deb-src http://ports.ubuntu.com/ xenial-backports main restricted universe multiverse
但是我在 apt 更新时收到这些错误：
W: The repository 'http://ppa.launchpad.net/kernel-ppa/ppa/ubuntu xenial Release' does not have a Release file.
E: Failed to fetch http://ppa.launchpad.net/kernel-ppa/ppa/ubuntu/dists/xenial/main/binary-armhf/Packages 404 Not Found
E: Failed to fetch http://ports.ubuntu.com/dists/xenial/main/binary-i386/Packages 404 Not Found [IP: 91.189.88.150 80]
E: Failed to fetch http://ports.ubuntu.com/dists/xenial-updates/main/binary-i386/Packages 404 Not Found [IP: 91.189.88.150 80]
E: Failed to fetch http://ports.ubuntu.com/dists/xenial-security/main/binary-i386/Packages 404 Not Found [IP: 91.189.88.150 80]
E: Failed to fetch http://ports.ubuntu.com/dists/xenial-backports/main/binary-i386/Packages 404 Not Found [IP: 91.189.88.150 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
这些错误是有道理的，因为它们不在实际目录中：http://ports.ubuntu.com/dists/xenial-backports/main/但是我还能怎样获取 i386 软件包呢？如果我使用依赖项安装脚本并且失败了，是否意味着脚本需要更新其软件包以供:i386最终使用？
这是我的源列表中需要更改的内容吗？还是我使用的镜像有问题？我该如何从 CLI 修复此问题？
答案1
仍然不知道其他问题的答案，但我能够使用以下方法解决源错误：
sudo dpkg --remove-architecture i386