今天升级时，我的无线网络管理器消失了。甚至不能通过有线连接进行连接。
文件显示此错误：
**(nm-applet:2716): WARNING **: Could not initialize NMClient /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files
(nm-applet:2716): nm-applet-WARNING **: Error connecting to ModemManager: Error calling StartServiceByName for org.freedesktop.ModemManager1: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Cannot launch daemon, file not found or permissions invalid
(nm-applet:2716): nm-applet-WARNING **: Could not find ShellVersion property on org.gnome.Shell after 5 tries
(nm-applet:2716): nm-applet-WARNING **: Failed to register as an agent: (2) The name org.freedesktop.NetworkManager was not provided by any .service files
是否有补丁可以通过 Windows 下载并发送到我的 ubuntu，还是必须重新加载所有内容？我尝试运行两个版本，但仍然无法访问互联网。
昨天我通过 SSH 升级了我的 Ubuntu，但在我完成之前，我重新启动了我的电脑。我知道那不是很聪明。无论如何，现在我没有互联网连接，无法识别 WiFi 或以太网。
当我尝试安装最新版本时，鼠标不起作用。当我尝试使用以前的版本并进入 gnome-network manager 时，它说：
系统网络服务与此版本不兼容
另一件事是当我回到远程计算机并查看进程已停止的 SSH 终端时：
Setting up desktop-file-utils (0.20-0ubuntu2) ...
Configuration file `/etc/gnome/defaults.list'
==> Modified (by you or by a script)
since installation. ==> Package distributor has shipped
an updated version. What would you like to do about it ?
Your options are: Y or I:install the package maintainer's
version N or O : keep your currently-installed version D :
show the differences between the versions Z : start a shell …我的网络昨天工作正常。我关机，上床睡觉，今天早上开机时，它甚至不与路由器通话；network-manager崩溃。
我想知道当它无法连接到互联网时如何升级包。我的 Ubuntu 15.10 笔记本电脑（这台机器）通过同一个路由器连接到互联网就好了。部分错误报告：
Title
NetworkManager crashed with SIGSEGV in nm_netlink_monitor_attach()
Unreportable reason
You have some obsolete package versions installed.
Please upgrade the following packages and check if the problem still occurs:
network-manager, libnm-glib-vpn1, libnm-glib4, libnm-util2, network-manager