apt-get 更新无法获取存储库

apt-get update fails to to fetch repositories

正在尝试在我从 Logic Supply 获得的新计算机上安装软件包。

当我第一次得到它并登录安装新软件包时,我做了 apt-get update 并得到(简化):

Err:1 http://us.archive.ubuntu.com/ubuntu/ xenial InRelease
   Could not resolve 'usvt-livepaapt01.logicsupply.com'
Err:2 ...
Err:3 ...
Reading package lists... Done
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/xenial/InRelease Could not resolve 'usvt-livepaapt01.logicsupply.com'
W: ...
W: ...
W: Some files failed to download. They have been ignored, or old ones used instead

这是一个问题,但更严重的是,如果我这样做(例如):

sudo apt-get 安装 make

我得到:

...
Package wget is not available, but is referred to by another package
This may mean that the package is missing, has been obsolete, or is only available from another source

E: Package 'wget' has no installation candidate

我向 Logic Supply 投诉,他们让我删除

/etc/modprobe.d/blacklist.local.conf

然后重新启动,我这样做了。但是并没有解决。

我删除了/var/lib/apt/lists/*/etc/apt/sources.list.d

我在网上能找到的所有东西都是关于修复网络的,但我的网络似乎没问题。我可以 ping us.archive.ubuntu.com 服务器。

我的/etc/apt/sources.list的内容是:

###### Ubuntu Main Repos
deb http://us.archive.ubuntu.com/ubuntu/ xenial main 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse 

###### Ubuntu Update Repos 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-security main 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates main 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse 

有什么想法吗?如何重置 apt-get 以不尝试从 logicsupply.com 服务器解析?

logicssupply 似乎安装了代理设置。

虽然确实从 sources.list.d 中删除了对 logicssupply 域的所有引用,但仍然存在通过 logicsupply.com 对代理服务器的请求 /etc/apt/apt.conf.

删除该 http 代理服务器可解决 apt-get 更新问题。