NIC IRQ conflict? Bad mojo?

frozenJim · Posted: Tue Nov 02, 2004 7:37 pm Post subject: NIC IRQ conflict? Bad mojo?

Hi,

I'm setting up an old P-133 with 3COM 3c905 is using 3c59x module.

What is killing me is that I get no errors, the driver is nicely loaded and I am TXing and RXing lots but only seem to TX packets. No RX packets.

speeding · n00b Joined: 13 May 2004 Posts: 14 Location: Europe

Have you tried assigning an ip address manually? like

frozenJim · Posted: Wed Nov 03, 2004 2:30 am Post subject:

Thanks for the info on lspci. I always wondered.

My network card has been moved from slot 3 into slot 1. Good thinking.

Yes, I have tried manual IP setting. Result is the same.

Interestingly, when I ping my manually set IP it succeeds in sending packets according to the ping command output but ifconfig eth0 still shows 0 packets RX.

jhfry · n00b Joined: 03 Nov 2004 Posts: 15

did you check all of the obvious stuff... like good cable, port on hub/switch?

also, post an "ethtool eth0", you could have a problem with the configuration of the card like the wrong duplex/speed settings.

it looks like ping is registering a reply, even though the board catches it as an overrun... notice that your RX line shows overruns in both of your ifconfigs.

Check out this page for some help in troubleshooting:

http://www.siliconvalleyccie.com/linux-hn/network-trouble.htm

frozenJim · Posted: Wed Nov 03, 2004 1:21 pm Post subject:

More good ideas, thanks.

I have re-tested all cabling between the router and my PC and found it to be good with my line-tester.

Then, I unplugged the eth cable from my PC and plugged it into the laptop that I am currently using to type this message. As you can see, I have good internet connectivity so we know that the cabling is not at fault.

Settings on the NIC have NOT been adjusted. I do not have the DOS diskette containing tools to change the eeprom settings. Since the NIC was working just fine before the etc-update, it also seems safe to assume that the NIC is correctly configured.

So, as you observed, I truly am RECEIVING bytes as well as TRANSMITTING bytes. I TRANSMIT packets but I do not RECEIVE any PACKETS, only OVERRUNS. This is where I am lost.

Since I cannot receive packets, this explains my error on boot while trying to start netmount. Dhcpcd is failing during netmount because no packets are received.

But what could cause me to receive bytes but not packets?

What in the heck is missing?
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jhfry · n00b Joined: 03 Nov 2004 Posts: 15

I would still double check the card settings... if it's autodetecting the duplex or speed wrong it could result in errors rather than packets. At least that way you are eliminating one more possibility.

PS- unless you have a switch, you need to be running in half-duplex.

frozenJim · Posted: Wed Nov 03, 2004 1:30 pm Post subject:

You are right. I'm gonna check that. It's worth the effort for sure.

Now that I think about it, these damned 3Com 3c905Tx have always been a bit "wonky" anyhow. They work in one PC one day and won't work in another, identical machine the next. Even on Windows XP which is pretty good with hardware.

I'll check the 3Com site for the eprom diskette.
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jhfry · n00b Joined: 03 Nov 2004 Posts: 15

you shouldnt need it... just use ethtool... it should tell you what it it set on.

frozenJim · Posted: Wed Nov 03, 2004 2:23 pm Post subject:

ethtool?

I don't know if this is something I have installed. I type "ethtool" at the prompt but there is no command by that name.

Sadly, I can't emerge it without a network connection.

Is it hidden somewhere that I'm not looking?
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Who controls the past, controls the future. Who controls the present, controls the past.

frozenJim · Posted: Thu Nov 04, 2004 3:47 pm Post subject: Getting desperate

I just swapped NIC's with another PC. 3Com works fine in the other PC on Linux and this PC has the SAME PROBLEM with the new NIC.

The NIC is NOT the problem. I then moved the PC to another network jack and used a different network cable and started up again.

Same error. Lots of RX and TX, but no packets being RXed.

Booted PC with LiveCD to bypass all of my (apparently) messed-up setttings and had the SAME PROBLEM!!!

wtf.

BIOS settings? Bios does not have a "pnp-os" setting. Switched PCI from Level to Edge but this made no difference (I have no idea what that means anyhow).

What kills me is that it WAS WORKING through several boots before i did my etc-update!!!

Helllpppppp mmmeeeeeeeeeee.........
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Who controls the past, controls the future. Who controls the present, controls the past.

roeles · n00b Joined: 10 Mar 2004 Posts: 3

I am currently experiencing the same problem.
I had this in the past (with 2 8139too's), but I am not sure what I did to get it working.
I remember modprobing with io= and irq= settings.
I tried it myself today, since I have the same problem you have. Also with 3c59x cards. No succes.
But hey, maybe it does help you

frozenJim · Posted: Sun Nov 07, 2004 3:54 am Post subject:

Anyone else have any suggestions?

I'm thinking that since it works fine in my other computers without editing the eeprom, and since it DID work on this one until I did my "emerge -U world" and etc-update, that it probably isn't the irq setting.

WHAT could have been changed during my etc-update that would cause this? It's almost like I'm not receiving my packets... like a routing issue.

Anyone? Sadly, this is a client's computer and I'm getting pretty embarassed :oops:

that it's taking me this long to figure this one out.
_________________
Who controls the past, controls the future. Who controls the present, controls the past.

rosema55 · n00b Joined: 19 Sep 2004 Posts: 27 Location: Sweden

Hi, I've read about your problem and I had a similar during a week or so after making " emerge world " First my sound stopped working and when I had fixed that netmount didn't start at boot. I think I was as desperate as you say you are. For some reason I looked in BIOS and three devices had the same IRQ value = 11. When I changed networkIRQ to 9 (USB controllIRQ changed at the same time and 9 seemed to be "free") netmount started at boot and soon after internet worked again. From what I've learned you are also working with a " not so new " computer like mine, a PII.