Network Detected, No Internet Connection

shrimpy89 · n00b Joined: 18 Sep 2009 Posts: 8 Location: Oxford, MS

Hi,
I've picked up an older desktop PC to experiment with Gentoo on. All the hardware works (tested with WinXP before I wiped it). My eth0 is detected, but I get no internet connection. My Ubuntu laptop works with this connection, and I've tried every option in the Gentoo Handbook besides manual (I'm not quite that technically savvy to get the all the different addresses and such). The only action in the ifconfig output i get is that TX packets have 93 errors, and carrier: 93. Everything else is zeroed. This is the only thing stopping me from continuing my minimal install. I'd appreciate any help.

DONAHUE · Posted: Sat Sep 19, 2009 1:59 am Post subject:

Is it the cd that will not connect using net-setup or have you done an install already that won't connect???
If cd which cd are you using?
If you have the ubuntu cd see if it will boot and connect.

shrimpy89 · n00b Joined: 18 Sep 2009 Posts: 8 Location: Oxford, MS

My install CD is install-x86-minimal-20090915.iso and the computer won't run my Ubuntu or Xubuntu CD past their bootup menus, for some reason. The Gentoo minimum install runs fine, and I should have enough RAM to run Xubuntu (192 MB). I've used the live CD to format and partition the hard drive, but I was stopped by the network issues.

DONAHUE · Posted: Sun Sep 20, 2009 4:16 am Post subject:

boot the minimal cd and run

shrimpy89 · n00b Joined: 18 Sep 2009 Posts: 8 Location: Oxford, MS

DONAHUE · Posted: Mon Sep 21, 2009 5:31 am Post subject:

you booted cd, ran

shrimpy89 · n00b Joined: 18 Sep 2009 Posts: 8 Location: Oxford, MS

For both eth0 up and down there were no messages, and ifconfig doesn't show an IP address. My internet connection is a little complicated, as I'm living in a college fraternity house that is in turn wired to our campus-wide network. Since there's two ethernet ports per room (no wireless), I would assume that there's a wired router somewhere around here. My ethernet cable works fine with my Xbox 360, so it might be possible that there's a problem with the ethernet port on this computer. However, my ethernet showed up in the dmesg output.

octavsly · Posted: Mon Sep 21, 2009 3:48 pm Post subject:

What does

shrimpy89 · n00b Joined: 18 Sep 2009 Posts: 8 Location: Oxford, MS

DONAHUE · Posted: Mon Sep 21, 2009 4:08 pm Post subject:

shrimpy89 · n00b Joined: 18 Sep 2009 Posts: 8 Location: Oxford, MS

DONAHUE · Posted: Mon Sep 21, 2009 6:14 pm Post subject:

probably time to talk to the IT folks at the college. It appears the dhcp server does not want to give you a lease. Find a computer sci major who works there part time.

System rescue cd , ubuntu, knoppix cd's may implement dhcp client differently? They can be used to do an install just as well as a gentoo minimal, actually better since you can still use the machine for other things.

shrimpy89 · n00b Joined: 18 Sep 2009 Posts: 8 Location: Oxford, MS

haha fair enough. Thanks for the patience and advice. Forums like this are what make the Linux community great!

octavsly · Posted: Mon Sep 21, 2009 6:57 pm Post subject:

If you have another linux PC you can configure it to give you an IP address and see if the dhcpc still works.

If you know the IP address the computer used to get you can try setting the IP address directly:
ifconfig eth0 xxx.xxx.xxx.xxx
Then you can try pinging xxx.xxx.xxx.254 or 1

shrimpy89 · n00b Joined: 18 Sep 2009 Posts: 8 Location: Oxford, MS

I tried the last method, and at first it seemed to work

octavsly · Posted: Mon Sep 21, 2009 7:36 pm Post subject:

Try to configure the other ubuntu laptop as a dhcp server. Then connect the two PC's via any UTP cable (direct/crossover). I think the auto-negotiation feature will get the connection right. Then try again the dhcpcd comand. If you get an IP address then you definitely need to contact IT. If not then more research is necessary.