我在新电脑上安装了 Ubuntu 14.04 桌面版。我的互联网连接（以太网）有问题。实际上，我的互联网工作了 20 秒，然后停止了 40 到 60 秒。这个循环不断重复，让我很难工作。
我尝试编辑/etc/reolv.conf来自
nameserver 127.0.0.1
到
nameserver 127.0.0.1
nameserver 8.8.8.8
nameserver 8.8.4.4
但问题并没有解决。
以下是ifconfig输出（我使用 eth0）
eth0: Link encap:Ethernet HWaddr f0:79:59:39:ae:80
inet addr:115.145.183.44 Bcast:115.145.183.255 Mask:255.255.255.0
inet6 addr: fe80::f279:59ff:fe39:ae80/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:195975 errors:0 dropped:0 overruns:0 frame:0
TX packets:15856 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:32299713 (32.2 MB) TX bytes:2260481 (2.2 MB)
Memory:fb300000-fb37ffff
eth1: Link encap:Ethernet HWaddr f0:79:59:39:ae:7f
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)
Interrupt:20 Memory:fb700000-fb720000
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:3647 errors:0 dropped:0 overruns:0 frame:0
TX packets:3647 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:350955 (350.9 KB) TX bytes:350955 (350.9 KB)
以下是输出sudo lshw -C network
*-network
description: Ethernet interface
product: Ethernet Connection (2) I218-LM
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: eth1
version: 05
serial: f0:79:59:39:ae:7f
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k firmware=0.1-4 latency=0 link=no multicast=yes port=twisted pair
resources: irq:97 memory:fb700000-fb71ffff memory:fb739000-fb739fff ioport:f020(size=32)
*-network
description: Ethernet interface
product: I210 Gigabit Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:0f:00.0
logical name: eth0
version: 03
serial: f0:79:59:39:ae:80
size: 100Mbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=igb driverversion=5.2.13-k duplex=full firmware=3.25, 0x800005cf ip=115.145.183.44 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:16 memory:fb300000-fb37ffff ioport:c000(size=32) memory:fb380000-fb383fff
答案1
在打开的终端中运行以下命令。
首先，运行以下命令将 resolv.conf 文件清零：
echo "# Generated by NetworkManager" | sudo tee /etc/resolv.conf
然后，重新启动网络管理器：
sudo service network-manager restart
您可能需要单击面板上的网络管理器图标，然后可能需要从下拉菜单中选择网络，或者尝试拔下并重新插入以太网电缆（如果需要）。如果问题已解决，则无需继续。如果没有解决，您可能需要通过运行以下命令清除现有的网络配置：
首先，创建一个文件来备份现有的配置，然后将文件移动到这里：
sudo mkdir /etc/NetworkManager/backupconnections
sudo mv /etc/NetworkManager/system-connections/* /etc/NetworkManager/backupconnections/
现在，重新启动网络管理器：
sudo service network-manager restart
您可能需要拔下以太网电缆并重新插入。