发出时收到以下错误消息：
sudo apt-get update
Get:1 http://us.archive.ubuntu.com/ubuntu xenial InRelease [95.8 kB]
Ign:2 http://repo.mongodb.org/apt/debian wheezy/mongodb-org/3.2 InRelease
Ign:3 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:4 http://ppa.launchpad.net/canonical-x/vulkan/ubuntu xenial InRelease
Hit:5 http://repo.mongodb.org/apt/debian wheezy/mongodb-org/3.2 Release
Hit:6 http://us.archive.ubuntu.com/ubuntu xenial-security InRelease
Ign:7 http://dl.google.com/linux/talkplugin/deb stable InRelease
Hit:8 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease
Ign:9 http://linux.dropbox.com/ubuntu wily InRelease
Hit:10 http://ppa.launchpad.net/numix/ppa/ubuntu xenial InRelease
Get:12 http://dl.google.com/linux/chrome/deb stable Release [782 B]
Hit:13 http://dl.google.com/linux/talkplugin/deb stable Release
Ign:14 https://apt.dockerproject.org/repo ubuntu-wily InRelease
Hit:15 https://apt.dockerproject.org/repo ubuntu-wily Release
Get:16 http://dl.google.com/linux/chrome/deb stable Release.gpg [181 B]
Hit:17 http://linux.dropbox.com/ubuntu wily Release
Get:20 http://dl.google.com/linux/chrome/deb stable/main amd64 Packages [1,191 …我使用的是 Google Chrome 48.0 32 位。今天当我启动谷歌浏览器时，我收到了这条消息：
This computer will soon stop receiving Google Chrome updates because
this Linux system will no longer be supported
我认为 Ubuntu 14.04 支持五年，这里到底发生了什么？
在 64 位 Ubuntu 上，我从更新管理器收到错误消息apt-get update：
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)
Some index files failed to download.
They have been ignored, or old ones used instead.
我有几个没有 armhf 二进制文件的存储库（用于 RPi 交叉编译器），所以apt-get在更新包列表时总是给我大量 404 错误。它还阻止我运行，do-release-upgrade因为它找不到 armhf 编译的系统二进制文件，它不需要也不能运行。
我正在寻找一种方法来告诉它只在某些存储库中搜索特定的拱门，这样我就可以在apt-get update. 谷歌没有帮助；据我所知，这不是骗局；一个可能相关的问题是关于 GPG 错误，我没有。
来源.列表：
# deb cdrom:[Ubuntu 13.10 _Saucy Salamander_ - Release amd64 (20131016.1)]/ saucy main restricted
# deb cdrom:[Ubuntu 13.10 _Saucy Salamander_ - Release amd64 (20131016.1)]/ saucy main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu trusty main restricted i386 amd64
deb-src http://archive.ubuntu.com/ubuntu trusty main restricted amd64 i386
## Major bug fix updates …