![刚刚安装了 15.04,我在终端命令末尾收到以下消息:sudo apt-get update](https://linux22.com/image/980402/%E5%88%9A%E5%88%9A%E5%AE%89%E8%A3%85%E4%BA%86%2015.04%EF%BC%8C%E6%88%91%E5%9C%A8%E7%BB%88%E7%AB%AF%E5%91%BD%E4%BB%A4%E6%9C%AB%E5%B0%BE%E6%94%B6%E5%88%B0%E4%BB%A5%E4%B8%8B%E6%B6%88%E6%81%AF%EF%BC%9Asudo%20apt-get%20update.png)
Fetched 331 kB in 11s (28.6 kB/s)
W: Failed to fetch
extras.ubuntu.com/ubuntu/dists/vivid/main/source/Sources 404 Not Found
W: Failed to fetch extras.ubuntu.com/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found"
另外还有一个 无法获取
E: Some index files failed to download. They have been ignored, or old ones used instead.
答案1
原因是这些存储库尚未创建,无论出于何种原因。一旦创建,它们将只包含额外内容,但如果您现在想要这些额外内容,您可以添加 14.10 额外存储库。如果您想知道如何操作,请评论此答案。我会将其添加进去。