当我尝试升级计算机上的软件时sudo apt-get upgrade出现以下错误
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
libpam-systemd libsystemd0 libudev1 systemd systemd-sysv udev
6 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
Need to get 5,051 kB of archives.
After this operation, 62.5 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Err:1 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 systemd-sysv amd64 229-4ubuntu11
404 Not Found [IP: 141.76.1.200 80]
Err:2 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 libpam-systemd amd64 229-4ubuntu11
404 Not Found [IP: 141.76.1.200 80]
Err:3 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 libsystemd0 amd64 229-4ubuntu11
404 Not Found [IP: 141.76.1.200 80]
Err:4 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 systemd amd64 229-4ubuntu11
404 Not Found [IP: 141.76.1.200 80]
Err:5 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 udev amd64 229-4ubuntu11
404 Not Found [IP: 141.76.1.200 80]
Err:6 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 libudev1 amd64 229-4ubuntu11
404 Not Found [IP: 141.76.1.200 80]
E: Failed to fetch http://de.archive.ubuntu.com/ubuntu/pool/main/s/systemd/systemd-sysv_229-4ubuntu11_amd64.deb 404 Not Found [IP: 141.76.1.200 80]
E: Failed to fetch http://de.archive.ubuntu.com/ubuntu/pool/main/s/systemd/libpam-systemd_229-4ubuntu11_amd64.deb 404 Not Found [IP: 141.76.1.200 80]
E: Failed to fetch http://de.archive.ubuntu.com/ubuntu/pool/main/s/systemd/libsystemd0_229-4ubuntu11_amd64.deb 404 Not Found [IP: 141.76.1.200 80]
E: Failed to fetch http://de.archive.ubuntu.com/ubuntu/pool/main/s/systemd/systemd_229-4ubuntu11_amd64.deb 404 Not Found [IP: 141.76.1.200 80]
E: Failed to fetch http://de.archive.ubuntu.com/ubuntu/pool/main/s/systemd/udev_229-4ubuntu11_amd64.deb 404 Not Found [IP: 141.76.1.200 80]
E: Failed to fetch http://de.archive.ubuntu.com/ubuntu/pool/main/s/systemd/libudev1_229-4ubuntu11_amd64.deb 404 Not Found [IP: 141.76.1.200 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
我sources.list看起来像
# deb cdrom:[Ubuntu 14.04.3 LTS _Trusty Tahr_ - Beta amd64 (20150805)]/ trusty main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://de.archive.ubuntu.com/ubuntu/ xenial main restricted
deb-src http://de.archive.ubuntu.com/ubuntu/ xenial main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://de.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
deb-src http://de.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://de.archive.ubuntu.com/ubuntu/ xenial universe
deb-src http://de.archive.ubuntu.com/ubuntu/ xenial universe
deb http://de.archive.ubuntu.com/ubuntu/ xenial-updates universe
deb-src http://de.archive.ubuntu.com/ubuntu/ xenial-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://de.archive.ubuntu.com/ubuntu/ xenial multiverse
deb-src http://de.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://de.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
deb-src http://de.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://de.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://de.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu xenial-security main restricted
deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://security.ubuntu.com/ubuntu xenial-security universe
deb-src http://security.ubuntu.com/ubuntu xenial-security universe
deb http://security.ubuntu.com/ubuntu xenial-security multiverse
deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu trusty partner
# deb-src http://archive.canonical.com/ubuntu trusty partner
# deb http://www.stats.bris.ac.uk/R/bin/linux/ubuntu precise/ # disabled on upgrade to xenial
# deb http://cran.rstudio.com/bin/linux/ubuntu trusty/ # disabled on upgrade to xenial
deb http://deb.torproject.org/torproject.org xenial main
deb-src http://deb.torproject.org/torproject.org xenial main
deb [arch=armhf] http://linux-packages.resilio.com/resilio-sync/deb
resilio-sync non-free
我尝试运行两个推荐的解决方案，但它们也未能解决问题。我尝试搜索该问题，但未能找到类似问题。
答案1
我猜你的包管理器的包和缓存列表已经过时了。
但为什么？
您正在使用xenial，您尝试访问的软件包之一是libpam-systemd，您的 pkg 管理器尝试从这里获取它：
http://de.archive.ubuntu.com/ubuntu/pool/main/s/systemd/libpam-systemd_229-4ubuntu11_amd64.deb
哪个服务器响应你 404，这意味着它不存在。
如果你检查主存储库，你会发现它也不在那里。
libpam-systemd如果你在以下xenial-updates部分搜索Ubuntu 软件包. 结果是229-4ubuntu16当您尝试达到 229-4ubuntu11 时，另一件事是这个新版本在您选择的存储库上可用。这里这是。
该怎么办？
更新您的列表：
sudo apt update
它应该可以为您完成这项工作。
但是，如果更新列表后仍然遇到问题，请尝试删除这些文件，然后再次运行上述命令：
sudo rm /var/lib/apt/lists/*
sudo rm /var/cache/apt/*.bin