Fresh install - No network

[mpcsm]

Hi
I'm new to Ubuntu.

Before the install, I ran the live CD and had network connection. While in live CD I installed ubuntu on HD and when I start from the hard disk, I get no wired network.

Any help would be appreciated...Thanks....remember newbie :)

[willca]

hello

what does the following give ya

ifconfig

Do you see an IP assigned to your nic?
IF not try restarting network..

sudo /etc/init.d/networking restart

[mpcsm]

ifconfig is
eth1 Link encap:Ethernet HWaddr 00:1a:92:8f:c6:c2
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:21 Base address:0xc000

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:1592 errors:0 dropped:0 overruns:0 frame:0
TX packets:1592 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:79600 (77.7 KB) TX bytes:79600 (77.7 KB)

Restarted network made no difference

[Iowan]

Check contents of /etc/network/interfaces. There should be an auto eth1 line. (There should also be a line describing whether connection is static, DHCP, etc.)

[mpcsm]

Content of Interface is only 2 lines and no mention of auto eth1
here is what it has

auto lo
iface lo inet loopback

[pedro_orange]

Strange that it works on the LiveCD but not after you've installed!

What sort of card you using there?

lshw -C network

Should tell you what you need to know.

[mpcsm]

Description: Ethernet interface
Product: RTL-8110SC/8169SC Gigabit Ethernet
Vendor: Realtek Semiconductor Co., Ltd.
Physical id: 7
Bus info: PCI@0000:04:07.0
Logical name: eth0
version 10
serial: 00:1a:92:8f:c6:c2
width: 32 bit
clock: 66MHZ
capabilities: bus_master cap_list ethernet physical
configuration: broadcast=yes driver=r8169 driverversion=2.2LK latency=64 maxlatency=64 mingnt=32 module=r8169 multicast=yes

[pedro_orange]

Hmm so your ifconfig is looking for logical name eth1, but your hardware list says your network card is eth0?

Thats strange.

Do you have multiple network cards installed on this machine?

Whats in your /etc/udev/rules.d/70-persistent-net.rules

You may need to be sudo to open this.