如题，每次更新源的时候，结果都停在0%[working]状态。网上搜类似问题的时候几乎找不到，不知道是什么原因，我是新手。

请把终端中所有提示信息都复制粘贴上来

我貌似不怎么会用这个插入图片的功能。。。
终端的输出只是一些忽略（Ign）和命中（Get）的消息，err的消息有一些404 not found。其他没有报错，就是最后一行有个0%[working]，然后就一直停在这儿，我只有Ctrl+C才退出来。

你的Ubuntu可以上网吧，终端中选中内容，到这里中键粘贴

[img]/home/ubuntu/Pictures/Screenshot%20from%202017-03-09%2010-28-39.png[/img]

都说了复制文字上来了。。。。。

点发表回复，才有上传附件的选项

hahaha...恕在下愚墩啦，下面是输出的所有信息，我的ubuntu是16.04英文版的，arm架构，更新源换了好几个，都这样
ubuntu@tegra-ubuntu:/etc/apt$ sudo apt-get update
Get:1 file:/var/cuda-repo-8-0-local InRelease
Ign:1 file:/var/cuda-repo-8-0-local InRelease
Get:2 file:/var/cuda-repo-8-0-local Release [574 B]
Get:2 file:/var/cuda-repo-8-0-local Release [574 B]
Get:3 http://mirrors.ustc.edu.cn/ubuntu xenial InRelease [247 kB]
Get:5 http://mirrors.ustc.edu.cn/ubuntu xenial/main Sources [868 kB]
Hit:6 http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease
Get:7 http://mirrors.ustc.edu.cn/ubuntu xenial/restricted Sources [4,808 B]
Get:8 http://mirrors.ustc.edu.cn/ubuntu xenial/universe Sources [7,728 kB]
Ign:9 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial InRelease
Ign:10 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial Release
Ign:11 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Sources
Ign:12 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 Packages
Get:13 http://mirrors.ustc.edu.cn/ubuntu xenial/multiverse Sources [179 kB]
Ign:14 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main all Packages
Ign:15 http://mirrors.ustc.edu.cn/ubuntu xenial/main arm64 Packages
Get:16 http://mirrors.ustc.edu.cn/ubuntu xenial/main Translation-en [568 kB]
Get:17 http://mirrors.ustc.edu.cn/ubuntu xenial/main arm64 DEP-11 Metadata [720 kB]
Get:18 http://mirrors.ustc.edu.cn/ubuntu xenial/main DEP-11 64x64 Icons [409 kB]
Ign:19 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en_US
Get:20 http://mirrors.ustc.edu.cn/ubuntu xenial/restricted Translation-en [2,908 B]
Get:21 http://mirrors.ustc.edu.cn/ubuntu xenial/restricted arm64 DEP-11 Metadata [186 B]
Ign:22 http://mirrors.ustc.edu.cn/ubuntu xenial/universe arm64 Packages
Get:23 http://mirrors.ustc.edu.cn/ubuntu xenial/universe Translation-en [4,354 kB]
Ign:24 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en
Ign:25 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 DEP-11 Metadata
Get:26 http://mirrors.ustc.edu.cn/ubuntu xenial/universe arm64 DEP-11 Metadata [3,362 kB]
Ign:27 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main DEP-11 64x64 Icons
Ign:11 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Sources
Get:28 http://mirrors.ustc.edu.cn/ubuntu xenial/universe DEP-11 64x64 Icons [7,448 kB]
Ign:12 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 Packages
Ign:14 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main all Packages
Ign:19 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en_US
Ign:24 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en
Ign:29 http://mirrors.ustc.edu.cn/ubuntu xenial/multiverse arm64 Packages
Get:30 http://mirrors.ustc.edu.cn/ubuntu xenial/multiverse Translation-en [106 kB]
Get:31 http://mirrors.ustc.edu.cn/ubuntu xenial/multiverse arm64 DEP-11 Metadata [58.5 kB]
Get:32 http://mirrors.ustc.edu.cn/ubuntu xenial/multiverse DEP-11 64x64 Icons [230 kB]
Ign:15 http://mirrors.ustc.edu.cn/ubuntu xenial/main arm64 Packages
Ign:22 http://mirrors.ustc.edu.cn/ubuntu xenial/universe arm64 Packages
Ign:29 http://mirrors.ustc.edu.cn/ubuntu xenial/multiverse arm64 Packages
Ign:25 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 DEP-11 Metadata
Ign:15 http://mirrors.ustc.edu.cn/ubuntu xenial/main arm64 Packages
Ign:22 http://mirrors.ustc.edu.cn/ubuntu xenial/universe arm64 Packages
Ign:29 http://mirrors.ustc.edu.cn/ubuntu xenial/multiverse arm64 Packages
Ign:27 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main DEP-11 64x64 Icons
Ign:11 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Sources
Ign:12 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 Packages
Ign:14 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main all Packages
Ign:19 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en_US
Err:15 http://mirrors.ustc.edu.cn/ubuntu xenial/main arm64 Packages
Unexpected type excepted 21 != 5 [IP: 202.141.176.110 80]
Ign:22 http://mirrors.ustc.edu.cn/ubuntu xenial/universe arm64 Packages
Ign:29 http://mirrors.ustc.edu.cn/ubuntu xenial/multiverse arm64 Packages
Ign:24 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en
Ign:25 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 DEP-11 Metadata
Ign:27 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main DEP-11 64x64 Icons
Ign:11 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Sources
Ign:12 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 Packages
Ign:14 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main all Packages
Ign:19 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en_US
Ign:24 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en
Ign:25 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 DEP-11 Metadata
Ign:27 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main DEP-11 64x64 Icons
Ign:11 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Sources
Ign:12 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 Packages
Ign:14 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main all Packages
Ign:19 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en_US
Ign:24 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en
Ign:25 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 DEP-11 Metadata
Ign:27 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main DEP-11 64x64 Icons
Err:11 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Sources
404 Not Found
Ign:12 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 Packages
Ign:14 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main all Packages
Ign:19 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en_US
Ign:24 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main Translation-en
Ign:25 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main arm64 DEP-11 Metadata
Ign:27 http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial/main DEP-11 64x64 Icons
0% [Working]

cat /etc/apt/sources.list
cat /etc/apt/sources.list.d/*
运行后贴上来

sources.list中我是先尽量整少点条目了：
ubuntu@tegra-ubuntu:/etc/apt$ cat /etc/apt/sources.list
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse


ubuntu@tegra-ubuntu:/etc/apt$ cat /etc/apt/sources.list.d/*
deb file:///var/cuda-repo-8-0-local /
deb file:///var/cuda-repo-8-0-local /
deb [arch=amd64] https://dl.google.com/linux/chrome/deb/ stable main
deb [arch=amd64] https://repo.fdzh.org/chrome/deb/ stable main
deb [arch=amd64] https://dl.google.com/linux/chrome/deb/ stable main
deb [arch=amd64] https://repo.fdzh.org/chrome/deb/ stable main
deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main
# deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main
deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main
# deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main
deb http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial main
deb-src http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial main
deb http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial main
deb-src http://ppa.launchpad.net/wengxt/fcitx-nightly/ubuntu xenial main

http://ppa.launchpad.net/wengxt/fcitx-nightly
这个ppa没有提供对16.04的支持，建议禁用，没禁用也不会造成0% [Working]的错误

deb file:///var/cuda-repo-8-0-local /
deb file:///var/cuda-repo-8-0-local /
不知道是不是这个的问题，可以尝试禁用下看是不是这个造成的

虽然问题没怎么解决，还是很感谢你～

大概率是由于/etc/apt/source.list.d引起的，具体是哪个PPA导致的有待考察。
其实最好不要放PPA，毕竟只是其他用户的个人盘，不太安全的。安装好需要的软件之后就把PPA删掉最好。

解决方法：sudo rm -r /etc/apt/source.list.d

参考网页：https://askubuntu.com/questions/498462/apt-get-stuck-at-0-working