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升级到 16.04 后以太网 (eth0) 不工作

tag-icon • tag-icon networking 16.04 upgrade ethernet
升级到 16.04 后以太网 (eth0) 不工作

将我的双启动 Windows 10 和 Ubuntu 14.04 LTS 升级到 16.04 后，有线连接停止工作。以太网选项变灰，只有无线连接可用。以太网连接在 Windows 10 中也不起作用。在 Windows 中运行诊断程序显示未连接以太网电缆。我在我的笔记本电脑上尝试了相同的 LAN 电缆和设置，它起作用了。

我的设置是通过 LAN 电缆连接到 NETGEAR 电力线扩展器，然后连接到我的 Virgin Media NETGEAR Superhub。它与我的笔记本电脑完美配合。

命令cat /etc/network/interfaces显示：

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

ip link显示：

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
    link/ether f8:0f:41:d7:6e:4c brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
    link/ether 30:10:b3:58:9e:a0 brd ff:ff:ff:ff:ff:ff

ifconfig -a显示：

eth0      Link encap:Ethernet  HWaddr f8:0f:41:d7:6e:4c  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

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:2505 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2505 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:249314 (249.3 KB)  TX bytes:249314 (249.3 KB)

wlan0     Link encap:Ethernet  HWaddr 30:10:b3:58:9e:a0  
          inet addr:192.168.0.13  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::3210:b3ff:fe58:9ea0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:256489 errors:0 dropped:0 overruns:0 frame:0
          TX packets:257071 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:259396146 (259.3 MB)  TX bytes:30064247 (30.0 MB)

dmesg | grep eth0显示：

[    1.883397] r8169 0000:02:00.0 eth0: RTL8168g/8111g at 0xffffc9000064a000, f8:0f:41:d7:6e:4c, XID 0c000800 IRQ 35
[    1.883404] r8169 0000:02:00.0 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]
[  103.024707] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[  104.161199] r8169 0000:02:00.0 eth0: rtl_phy_reset_cond == 1 (loop: 100, delay: 1).
[  104.163807] r8169 0000:02:00.0 eth0: link down
[  104.163900] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

lspci -v显示以太网控制器：

02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
    DeviceName: Onboard Realtek LAN
    Subsystem: Acer Incorporated [ALI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
    Flags: bus master, fast devsel, latency 0, IRQ 35
    I/O ports at e000 [size=256]
    Memory at fe800000 (64-bit, non-prefetchable) [size=4K]
    Memory at d0800000 (64-bit, prefetchable) [size=16K]
    Capabilities: [40] Power Management version 3
    Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [70] Express Endpoint, MSI 01
    Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
    Capabilities: [d0] Vital Product Data
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Virtual Channel
    Capabilities: [160] Device Serial Number 01-00-00-00-68-4c-e0-00
    Capabilities: [170] Latency Tolerance Reporting
    Kernel driver in use: r8169
    Kernel modules: r8169

我使用升级了网卡驱动程序sudo apt-get install r8168-dkms但这并不能解决问题。

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