未能安装不受信任的源，也未能下载更新信息

Question

我将我的服务器从可用最快的服务器改为主服务器，同时试图修复软件管理器的问题(不受信任的源代码无法安装FYI)，我得到了一个错误。

以下是我遇到的一个错误：

W:GPG error: https://download.01.org trusty InRelease: 
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A902DDA375E52366 
, W:Failed to fetch http://ppa.launchpad.net/baszczewski/qtiko/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/baszczewski/qtiko/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/hakermania/format-junkie/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/hakermania/format-junkie/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/kroq-gar78/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/kroq-gar78/ppa/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/megous/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/megous/ppa/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/moka/faba-icon-theme/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/moka/faba-icon-theme/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/moka/moka-gtk-theme/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/moka/moka-gtk-theme/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/moka/moka-icon-theme/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/moka/moka-icon-theme/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/snwh/moka-gtk-theme-daily/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/snwh/moka-gtk-theme-daily/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/snwh/moka-icon-theme-daily/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found
, W:Failed to fetch http://ppa.launchpad.net/snwh/moka-icon-theme-daily/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found
, E:Some index files failed to download. They have been ignored, or old ones used instead.

我尝试了如何在使用PPA或更新包列表时修复404错误？中的步骤，但在软件更新程序中仍然出现了一个不受信任的源错误。

Answer 1

• 首先安装Y管理器:为此您必须下载deb软件包，您不能通过PPA安装，因为您不能更新软件列表。 点击此链接下载deb
• 然后打开它，点击高级选项。

• 然后单击第二个选项(尝试导入所有丢失的GPG键)，如下图所示：

• 等一段时间。然后单击第三个选项(尝试修复所有GPG BADSIG错误)，您需要等待一段时间，直到它显示您已完成的通知！
• 如果您最近升级了Ubuntu，您必须单击“Ubuntu升级后重新启用工作PPAs”。
• 然后运行sudo apt-get update之后，您可以返回到您想要做的事情。