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Old 03-26-2003, 09:10 PM   #1
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Network problem

Here's my problem. I'm trying to setup dual boot machine (win XP + Linux).

First I did Redhat 8.0 install and then I also tried Suse 8.0. Both went OK as far as I can tell, each time my network card was recognized without a problem (Realtek 8139) but my internet connection is not working. All this time, when I boot to Windows, everyhing works fine.

Also, when I do ifconfig , everything seems to be in order there - IP, gateway, namesearch values are the ones I've put in during installation, driver seems to be loaded fine...

Also, on my old PC Linux (Redhat 7.3 then) was working without any problem on same cable modem, so I think modem itself is not a problem.

Help, help, help!


Last edited by Depape; 03-26-2003 at 09:13 PM.
Old 03-27-2003, 01:03 AM   #2
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can u ping? say the IP address of your ISP's DNS server? or an outside site?
Old 03-27-2003, 05:43 AM   #3
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No, nothing, can only ping myself.

And I just remembered this... when i bought this new PC, the network also wasn't working in Windows after the installation, because the network card was set-up on 100Mb full duplex. Once I changed this to 10Mb full duplex all went well.

Is it possible that this might be the case? But I got no idea how to check this in Linux or to change it.

Old 03-27-2003, 12:38 PM   #4
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I also have a realtek 8139 and it figures out istself if 100 or 10mb speed is possible. So i don't thing you have to worry about that.
Have you checked if your card is up, you can check this by typing ifconfig as root. It will show you the networdk devivices. You should see localhost and eth0. If it isn't up give ifconfig eth0 up.
Old 03-27-2003, 02:24 PM   #5
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Here is what I got when I typed ifconfig:

eth0 Link encap:Ethernet HWaddr 00:02:44:5B:B8:63
inet addr: Bcast: Mask:
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 b) TX bytes:240 (240.0 b)
Interrupt:11 Base address:0xf00

lo Link encap:Local Loopback
inet addr: Mask:
RX packets:72 errors:0 dropped:0 overruns:0 frame:0
TX packets:72 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4694 (4.5 Kb) TX bytes:4694 (4.5 Kb)

I belive this shows that card is up OK?

Old 03-27-2003, 08:01 PM   #6
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Have you checked your /etc/resolv.conf file to make sure you've got your ISP's DNS info correctly entered?

domain <yourISPdomainnamehere>
nameserver yyy.yyy.yyy.yyy

You obviously need to enter the correct domain name in and not have the <>'s in there and is the primary DNS IP while yyy.yyy.yyy.yyy is the secondary DNS IP. If this doesn't work out, try running as root in a terminal, redhat-config-network. Hope this helps.
Old 03-28-2003, 04:54 AM   #7
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Checked /etc/resolv.conf, DNS entries are there OK. Re-run redhat-config-network, re-booted, no change, nothing happens

Old 03-28-2003, 01:32 PM   #8
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Problem solved

Problem was after all in the fact, that I can only access network if NIC is setup on 10Mb full duplex, which mine was not. Default setting on my card was auto negotiating I belive. After i used rtl8139-diag utility and forced NIC to 10baseT media type (10Mb full duplex speed) I am finally able to write this from Linux



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