来源：http://forum.ubuntu.org.cn/viewtopic.php?f=116&t=463646
1、执行如下命令
uname -a sudo lspci -knn sudo lshw -C network ifconfig ping 192.168.1.1 -c 4 tail /var/log/syslog -n 20
2、查看状态：
[email protected]:~$ uname -aLinux gofox-To-be-filled-by-O-E-M 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux[email protected]:~$ lspci00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI bridge (external gfx0 port B) (rev 02)00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI bridge (PCI express gpp port B)00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI bridge (PCI express gpp port D)00:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI bridge (PCI express gpp port H)00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] (rev 40)00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller (rev 42)00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 IDE Controller (rev 40)00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) (rev 40)00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 LPC host controller (rev 40)00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Bridge (rev 40)00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller00:16.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller00:16.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor HyperTransport Configuration00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor Address Map00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor DRAM Controller00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor Miscellaneous Control00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor Link Control01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn PRO [Radeon HD 7850]01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series]02:00.0 USB controller: Etron Technology, Inc. EJ168 USB 3.0 Host Controller (rev 01)03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)[email protected]:~$ sudo lshw -C network[sudo] password for gofox: *-network description: Ethernet interfaceproduct: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controllervendor: Realtek Semiconductor Co., Ltd.physical id: 0bus info: [email protected]:03:00.0logical name: eth0version: 06serial: 94:de:80:2a:f5:58size: 100Mbit/scapacity: 1Gbit/swidth: 64 bitsclock: 33MHzcapabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiationconfiguration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.1.100 latency=0 link=yes multicast=yes port=MII speed=100Mbit/sresources: irq:73 ioport:d000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff[email protected]:~$ ifconfigeth0 Link encap:以太网 硬件地址 94:de:80:2a:f5:58 inet 地址:192.168.1.100 广播:192.168.1.255 掩码:255.255.255.0inet6 地址: fe80::96de:80ff:fe2a:f558/64 Scope:LinkUP BROADCAST RUNNING MULTICAST MTU:1500 跃点数:1接收数据包:31 错误:0 丢弃:0 过载:0 帧数:0发送数据包:35 错误:0 丢弃:611 过载:0 载波:0碰撞:0 发送队列长度:1000 接收字节:4309 (4.3 KB) 发送字节:5059 (5.0 KB) lo Link encap:本地环回 inet 地址:127.0.0.1 掩码:255.0.0.0inet6 地址: ::1/128 Scope:HostUP LOOPBACK RUNNING MTU:65536 跃点数:1接收数据包:1054 错误:0 丢弃:0 过载:0 帧数:0发送数据包:1054 错误:0 丢弃:0 过载:0 载波:0碰撞:0 发送队列长度:0 接收字节:84166 (84.1 KB) 发送字节:84166 (84.1 KB) [email protected]:~$ ping 192.168.1.1 -c 4PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.From 192.168.1.100 icmp_seq=1 Destination Host UnreachableFrom 192.168.1.100 icmp_seq=2 Destination Host UnreachableFrom 192.168.1.100 icmp_seq=3 Destination Host UnreachableFrom 192.168.1.100 icmp_seq=4 Destination Host Unreachable --- 192.168.1.1 ping statistics ---4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3000mspipe 3[email protected]:~$ tail /var/log/syslog -n 20Sep 3 11:15:27 gofox-To-be-filled-by-O-E-M kernel: [ 43.926344] ---[ end trace f68773f9b988bca3 ]---Sep 3 11:15:27 gofox-To-be-filled-by-O-E-M kernel: [ 43.932415] r8169 0000:03:00.0 eth0: link upSep 3 11:15:30 gofox-To-be-filled-by-O-E-M ntpdate[2071]: Can‘t find host ntp.ubuntu.com: Name or service not known (-2)Sep 3 11:15:30 gofox-To-be-filled-by-O-E-M ntpdate[2071]: no servers can be used, exitingSep 3 11:15:41 gofox-To-be-filled-by-O-E-M whoopsie[1006]: offlineSep 3 11:16:09 gofox-To-be-filled-by-O-E-M kernel: [ 85.984761] r8169 0000:03:00.0 eth0: link upSep 3 11:17:01 gofox-To-be-filled-by-O-E-M CRON[2447]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)Sep 3 11:17:27 gofox-To-be-filled-by-O-E-M kernel: [ 164.012906] r8169 0000:03:00.0 eth0: link upSep 3 11:17:51 gofox-To-be-filled-by-O-E-M kernel: [ 188.029088] r8169 0000:03:00.0 eth0: link upSep 3 11:18:15 gofox-To-be-filled-by-O-E-M kernel: [ 212.045170] r8169 0000:03:00.0 eth0: link upSep 3 11:18:51 gofox-To-be-filled-by-O-E-M kernel: [ 248.069269] r8169 0000:03:00.0 eth0: link upSep 3 11:19:15 gofox-To-be-filled-by-O-E-M kernel: [ 272.085347] r8169 0000:03:00.0 eth0: link upSep 3 11:19:51 gofox-To-be-filled-by-O-E-M kernel: [ 308.109475] r8169 0000:03:00.0 eth0: link upSep 3 11:19:56 gofox-To-be-filled-by-O-E-M anacron[909]: Job `cron.daily‘ startedSep 3 11:19:56 gofox-To-be-filled-by-O-E-M anacron[2602]: Updated timestamp for job `cron.daily‘ to 2014-09-03Sep 3 11:20:15 gofox-To-be-filled-by-O-E-M kernel: [ 332.125563] r8169 0000:03:00.0 eth0: link upSep 3 11:20:51 gofox-To-be-filled-by-O-E-M kernel: [ 368.149702] r8169 0000:03:00.0 eth0: link upSep 3 11:22:03 gofox-To-be-filled-by-O-E-M kernel: [ 440.201919] r8169 0000:03:00.0 eth0: link upSep 3 11:23:03 gofox-To-be-filled-by-O-E-M kernel: [ 500.238182] r8169 0000:03:00.0 eth0: link upSep 3 11:23:39 gofox-To-be-filled-by-O-E-M kernel: [ 536.262303] r8169 0000:03:00.0 eth0: link up[email protected]:~$
3、查看网络连接是否正常
sudo ls -al /etc/resolv.conf lrwxrwxrwx 1 root root 29 8月 28 20:05 /etc/resolv.conf -> ../run/resolvconf/resolv.conf sudo cat /etc/resolv.conf nameserver 127.0.1.1
运行结果
。。。 [email protected]:~$ lspci 。。。 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] 02:00.0 USB controller: Etron Technology, Inc. EJ168 USB 3.0 Host Controller (rev 01) 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) [email protected]:~$ sudo lshw -C network [sudo] password for gofox: *-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: [email protected]:03:00.0 logical name: eth0 version: 06 serial: 94:de:80:2a:f5:58 size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.1.100 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: irq:73 ioport:d000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff [email protected]:~$ ifconfig eth0 Link encap:以太网 硬件地址 94:de:80:2a:f5:58 inet 地址:192.168.1.100 广播:192.168.1.255 掩码:255.255.255.0 inet6 地址: fe80::96de:80ff:fe2a:f558/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 跃点数:1 接收数据包:31 错误:0 丢弃:0 过载:0 帧数:0 发送数据包:35 错误:0 丢弃:611 过载:0 载波:0 碰撞:0 发送队列长度:1000 接收字节:4309 (4.3 KB) 发送字节:5059 (5.0 KB) 。。。 [email protected]:~$ tail /var/log/syslog -n 20 Sep 3 11:15:27 gofox-To-be-filled-by-O-E-M kernel: [ 43.926344] ---[ end trace f68773f9b988bca3 ]--- Sep 3 11:15:27 gofox-To-be-filled-by-O-E-M kernel: [ 43.932415] r8169 0000:03:00.0 eth0: link up Sep 3 11:15:30 gofox-To-be-filled-by-O-E-M ntpdate[2071]: Can‘t find host ntp.ubuntu.com: Name or service not known (-2) Sep 3 11:15:30 gofox-To-be-filled-by-O-E-M ntpdate[2071]: no servers can be used, exiting Sep 3 11:15:41 gofox-To-be-filled-by-O-E-M whoopsie[1006]: offline Sep 3 11:16:09 gofox-To-be-filled-by-O-E-M kernel: [ 85.984761] r8169 0000:03:00.0 eth0: link up Sep 3 11:17:01 gofox-To-be-filled-by-O-E-M CRON[2447]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Sep 3 11:17:27 gofox-To-be-filled-by-O-E-M kernel: [ 164.012906] r8169 0000:03:00.0 eth0: link up Sep 3 11:17:51 gofox-To-be-filled-by-O-E-M kernel: [ 188.029088] r8169 0000:03:00.0 eth0: link up Sep 3 11:18:15 gofox-To-be-filled-by-O-E-M kernel: [ 212.045170] r8169 0000:03:00.0 eth0: link up Sep 3 11:18:51 gofox-To-be-filled-by-O-E-M kernel: [ 248.069269] r8169 0000:03:00.0 eth0: link up Sep 3 11:19:15 gofox-To-be-filled-by-O-E-M kernel: [ 272.085347] r8169 0000:03:00.0 eth0: link up Sep 3 11:19:51 gofox-To-be-filled-by-O-E-M kernel: [ 308.109475] r8169 0000:03:00.0 eth0: link up Sep 3 11:19:56 gofox-To-be-filled-by-O-E-M anacron[909]: Job `cron.daily‘ started Sep 3 11:19:56 gofox-To-be-filled-by-O-E-M anacron[2602]: Updated timestamp for job `cron.daily‘ to 2014-09-03 Sep 3 11:20:15 gofox-To-be-filled-by-O-E-M kernel: [ 332.125563] r8169 0000:03:00.0 eth0: link up Sep 3 11:20:51 gofox-To-be-filled-by-O-E-M kernel: [ 368.149702] r8169 0000:03:00.0 eth0: link up Sep 3 11:22:03 gofox-To-be-filled-by-O-E-M kernel: [ 440.201919] r8169 0000:03:00.0 eth0: link up Sep 3 11:23:03 gofox-To-be-filled-by-O-E-M kernel: [ 500.238182] r8169 0000:03:00.0 eth0: link up Sep 3 11:23:39 gofox-To-be-filled-by-O-E-M kernel: [ 536.262303] r8169 0000:03:00.0 eth0: link up [email protected]:~$
4、分析问题
不出所料，应该是你的网卡使用了错误的驱动，见红色字体的内容： 你的网卡是“RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller”，不应使用r8169这个内核驱动模块来驱动，否则就出现象你现在这样拿到了dhcp的ip地址，但网卡却一直处于不断“r8169 0000:03:00.0 eth0: link up”的状态。这样是无法使用有线网络的。 正确的驱动要到realtek的网站下载，自己安装。http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=13&PFid=5&Level=5&Conn=4&DownTypeID=3&GetDown=false#2 选择上面这个链接中unix条目下那个“LINUX driver for kernel 3.x and 2.6.x and 2.4.x”、版本为“8.038”的文件下载。下载好文件，解压到你的家目录中，然后在家目录中执行以下命令：
代码:
cd r8168-8.038.00
sudo ./autorun.sh
驱动安装完成，重启系统。你的有线网络就应该正常了。
时间： 2024-10-18 09:06:47