Ubuntu 9.02 Cannot find network device

[C_ntua]

Ubuntu don't seem to find my network card. The command ifconfig eth0 gives no device found.
So what can I do to make it detect it?

[bithub]

You can run lspci (assuming your network card is on the PCI bus) to make sure the kernel sees it. If it shows up, then it's probably just a matter of installing the correct driver. The correct driver is dependent upon what card you have.

[C_ntua]

Its on board on the motherboard actually. Should mention that I didn't have problems with Ubuntu 7.10

[bithub]

>> Its on board on the motherboard actually.
So it's probably on the PCI bus then. What is the output from lspci?

[vart]

9.02? what is this?

some beta version of 9.04 had problems with network card driver on some netbooks. But it was long time ago fixed... have you searched you network card model on the Ubuntu forums?

[C_ntua]

Sorry, meant 9.04. I also tried 7.10 which I am sure they had no problems, though of course they didn't work.

I tried Ubuntu forums but cannot get it working yet.

I give the commands:
lshw -C network
I get something like

network DISABLED
Ethernate Interface (or controller?)
...
...

Nothing else. Shouldn't I get something with nvidia nforce also, sine that is the chipset?

I tried modifying /etc/network/interfaces. It had

auto lo
iface lo inet loopback

I change lo to eth0 and loopback to dhcp

Then when I restart networking then dhcp finds nothing.

ifconfig eth0 gives me
inet addr 127.0.0.1 hwaddr blah:blah:blah:blah
so no correct ip either

route gives me an empty table


So still stuck how to enable the network...

EDIT: I believe it doesn't actually finds the network chipset at all, just something else. Is there a way to make it look up for it?

[vart]

have you looked at

dmesg | grep eth0

output for errors?

Have you checked the System/Preferences/Network Connections/Wired tab?

[cyberfish]

>> Its on board on the motherboard actually.
So it's probably on the PCI bus then. What is the output from lspci?

4 characters.

[MK27]

4 characters.

Well, something is busted then, which I presume you know that. lspci should show the bridges and interfaces even if there are no pci devices on the system.

[C_ntua]

I will look into it and see. Currently it is not working for windows either...

[Cactus_Hugger]

You need to be more specific. This:

ifconfig eth0 gives me
inet addr 127.0.0.1 hwaddr blah:blah:blah:blah
so no correct ip either

...contradicts:

ifconfig eth0 gives no device found

Did ifconfig eth0 give you ouput, even if with a wrong IP? Also, are you sure your device is eth0? (What's in /dev/net/dev ?)

[C_ntua]

Yeah, that is because the second time I modified /etc/network/interfaces. Have some other issues atm, so will try what suggested in a few days maybe

EDIT: So modifying the file gives an output. Before it didn't. Tried to change to eth1, eth2, eth3, eth4 etc but wouldn't detect anything.

[Cactus_Hugger]

You're still making little sense. Does the command `ifconfig eth0` give you output? Also `cat /proc/net/dev` should show your ethernet devices. If you see your device in either listing, then you have drivers for it, and your problem is something else.