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apt-get update 上“没有可用的公钥”

tag-icon • tag-icon 14.04
apt-get update 上“没有可用的公钥”

当我执行 时sudo apt-get update，遇到以下情况：

Fetched 189 B in 10s (18 B/s)                                                  
W: There is no public key available for the following key IDs:
1397BC53640DB551
W: GPG error: http://download.opensuse.org ./ Release: The following signatures were invalid: KEYEXPIRED 1436387333
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release  Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)

E: Some index files failed to download. They have been ignored, or old ones used instead.

有什么好的/推荐的方法来解决这个问题？

答案1

因为根据 OP 之前的回复错误已经减少了——以下链接应该有所帮助：https://askubuntu.com/a/650051/382121- 如果这解决了您的问题，请告诉我们 Sandeep Chatterjee

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