升级到16.10后，以太网停止工作

网络管理员报告：

device not managed 

输出sudo lshw -C Network ：

 *-network DISABLED description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: enp2s0 version: 15 serial: 2c:60:0c:f6:97:a6 size: 10Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.042.00-NAPI duplex=full latency=0 link=no multicast=yes port=twisted pair speed=10Mbit/s resources: irq:47 ioport:4000(size=256) memory:c4404000-c4404fff memory:c4400000-c4403fff *-network description: Wireless interface product: QCA9377 802.11ac Wireless Network Adapter vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:03:00.0 logical name: wlp3s0 version: 30 serial: 48:e2:44:46:07:ab width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=ath10k_pci driverversion=4.8.0-34-generic firmware=WLAN.TF.1.0-00267-1 ip=192.168.1.101 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:53 memory:c4200000-c43fffff 

输出nmcli d ：

 DEVICE TYPE STATE CONNECTION wlp3s0 wifi connected FASTWEB*************** enp2s0 ethernet unmanaged -- lo loopback unmanaged -- 

ifconfig输出：

 lo: flags=73 mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1 (Local Loopback) RX packets 2487 bytes 383935 (383.9 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 2487 bytes 383935 (383.9 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 wlp3s0: flags=4163 mtu 1500 inet 192.168.1.101 netmask 255.255.255.0 broadcast 192.168.1.255 inet6 2001:b07:6452:4630:d631:dc14:aa32:46e7 prefixlen 64 scopeid 0x0 inet6 fe80::7932:6d1f:e49b:9b8d prefixlen 64 scopeid 0x20 ether 48:e2:44:46:07:ab txqueuelen 1000 (Ethernet) RX packets 29742 bytes 30300740 (30.3 MB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 22589 bytes 4019841 (4.0 MB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 

输出ip a ：

 1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp2s0:  mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 2c:60:0c:f6:97:a6 brd ff:ff:ff:ff:ff:ff 3: wlp3s0:  mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 48:e2:44:46:07:ab brd ff:ff:ff:ff:ff:ff inet 192.168.1.101/24 brd 192.168.1.255 scope global dynamic wlp3s0 valid_lft 42392sec preferred_lft 42392sec inet6 2001:b07:6452:4630:d631:dc14:aa32:46e7/64 scope global noprefixroute valid_lft forever preferred_lft forever inet6 fe80::7932:6d1f:e49b:9b8d/64 scope link valid_lft forever preferred_lft forever 

我该如何解决？

Answer 1

在终端中运行它（然后重新启动）：

 sudo touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf 

当我将Ubuntu从16.04升级到16.10时，它解决了类似的问题。

Answer 2

您的设备存在，但系统因任何原因拒绝管理它。

要解决此问题，请确保/etc/network/interfaces文件不包含以太网设备的定义。 在终端中，运行以下命令：

 sudo cp /etc/network/interfaces /etc/network/interfaces.bak sudo nano /etc/network/interfaces 

删除除了这三行之外的所有行（除非你有充分的理由留下其他行）：

 # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback 

然后，通过重新启动或运行以下命令重新启动网络管理器：

 sudo service network-manager restart 

---

或者，您可以通过网络管理器启用对所有接口的管理，但请注意，这可能会导致其他与网络相关的问题。

在/etc/NetworkManager/NetworkManager.conf ，将任何显示为managed=false行更改为：

 managed=true 

请务必通过重新启动或使用上述命令重新启动NetworkManager。

Answer 3

试试这个链接它解释了错误https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1638842