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I just installed Kubuntu 12.04 on a new computer with an Asus motherboard containing onboard NIC. The onboard NIC is enabled in BIOS. I don't happen to have a spare network card to test with. The internet connection is via a D-Link router, either wired or wireless via T-Link USB wireless adapter. The internet connection works fine for other computers on the network (2 wired and 1 wireless). I have tried multiple known-good cables and router ports with this computer. I also booting into Kubuntu 11.10 LiveCD to test there as well, same results.

This machine will not connect to the internet. On the wired connection in 12.04:

shelly@neptune:~$ sudo service networking status
networking stop/waiting
shelly@neptune:~$ sudo service networking restart
stop: Unknown instance:
networking stop/waiting
shelly@neptune:~$ ping google.com
ping: unknown host google.com
shelly@neptune:~$ ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_req=1 ttl=64 time=0.027 ms
64 bytes from 127.0.0.1: icmp_req=2 ttl=64 time=0.019 ms
64 bytes from 127.0.0.1: icmp_req=3 ttl=64 time=0.017 ms
64 bytes from 127.0.0.1: icmp_req=4 ttl=64 time=0.027 ms
64 bytes from 127.0.0.1: icmp_req=5 ttl=64 time=0.018 ms
64 bytes from 127.0.0.1: icmp_req=6 ttl=64 time=0.021 ms
64 bytes from 127.0.0.1: icmp_req=7 ttl=64 time=0.019 ms
^C
--- 127.0.0.1 ping statistics ---
7 packets transmitted, 7 received, 0% packet loss, time 5997ms
rtt min/avg/max/mdev = 0.017/0.021/0.027/0.004 ms
shelly@neptune:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 54:04:a6:82:6b:eb
          inet6 addr: fe80::5604:a6ff:fe82:6beb/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:230 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:360 (360.0 B)  TX bytes:50506 (50.5 KB)
          Interrupt:46 Base address:0xe000

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:16436  Metric:1
          RX packets:134 errors:0 dropped:0 overruns:0 frame:0
          TX packets:134 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:10616 (10.6 KB)  TX bytes:10616 (10.6 KB)

shelly@neptune:~$ lshw -C network
WARNING: you should run this program as super-user.
  *-network
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: eth0
       version: 06
       serial: 54:04:a6:82:6b:eb
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: 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 latency=0 multicast=yes port=MII speed=100Mbit/s
       resources: irq:46 ioport:e000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
shelly@neptune:~$ sudo lshw -C network
  *-network
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: eth0
       version: 06
       serial: 54:04:a6:82:6b:eb
       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 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:46 ioport:e000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff
shelly@neptune:~$ sudo service network-manager status
network-manager start/running, process 823
shelly@neptune:~$ sudo service network-manager restart
network-manager stop/waiting
network-manager start/running, process 1684
shelly@neptune:~$ lsmod | grep -i r8169
r8169                  62099  0
shelly@neptune:~$

EDIT: It turns out that instead of the detected r8169 LAN card, this motherboard uses an 8111E as discovered here. So that is the solution.

Community
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dotancohen
  • 2,864

4 Answers4

3

Let's start with a few questions to clarify your hardware configuration.

  • How is the NIC configured to operate - have you set it for Static/Manual or Automatic DHCP?
  • Are the LEDs on the NIC on/blinking?
  • What type of router/modem are you using, and are you using factory or other firmware on these devices?

A note on your printout above:

  • eth0 (which is presumably your NIC) has no IP address assigned.
James Mullinix
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1

why restart a service when it is stopped?

try sudo networking start

Also please configure the ip addresses (if static).

Web-E
  • 21,716
0

The problem was the lack of drivers for this motherboard's NIC in the -23 kernel. I expand on the problem more in a conclusion post to a related question.

Community
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dotancohen
  • 2,864
0

I encountered the same problem when adjusting the sshd_config file and needing to apply the changes. Just use the good old /etc/init.d/ script and pass "restart"

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Mike
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