因此，我一直在台式机的单独 SSD 上设置 Ubuntu 14.04，以进行一些机器学习开发。每当我启动另一个时，我都会手动断开 Win10 端或 Linux 端的连接，但我最近更新了 grub，以便能够更方便地进行双启动。
启动 Windows 并返回 ubuntu 后，我开始遇到以太网连接问题，甚至以太网现在根本无法工作，而且 wifi 也时断时续。
以下是一些输出：
ifconfig：
eth0 Link encap:Ethernet HWaddr 00:1f:bc:11:c6:54
inet6 addr: fe80::21f:bcff:fe11:c654/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:367 errors:0 dropped:0 overruns:0 frame:0
TX packets:400 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:73157 (73.1 KB) TX bytes:80690 (80.6 KB)
Interrupt:20 Memory:fb200000-fb220000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:1510 errors:0 dropped:0 overruns:0 frame:0
TX packets:1510 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:147748 (147.7 KB) TX bytes:147748 (147.7 KB)
wlan0 Link encap:Ethernet HWaddr 74:da:38:56:1d:d0
inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::76da:38ff:fe56:1dd0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:81002 errors:0 dropped:0 overruns:0 frame:0
TX packets:45507 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:117394416 (117.3 MB) TX bytes:4299198 (4.2 MB)
linux - linux系统grep 以太网：
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (2) I218-V (rev 05)
网络管理器.conf：
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
no-auto-default=00:1F:BC:11:C6:54,
[ifupdown]
managed=true
在 /etc/网络/接口：
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
sudo ethtool eth0：
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: off (auto)
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
sudo /etc/dhclient：
sudo: /etc/dhclient: command not found
似乎有很多这样的帖子，我已经浏览了 Google 上出现的前六篇帖子。此外，第一次发生这种情况时，将 NetworkManager.conf 行从“managed=false”更改为“true”可以完美解决此问题。在启动 Windows 并返回 ubuntu 后，情况似乎变得更糟。
哦，现在我启动时还会收到多个“检测到系统软件问题”消息。
谢谢你的帮助！