Click to See Complete Forum and Search --> : Usenet Kills my Network


aragon127
06-30-2005, 08:07 AM
Ok, been over a month now I'm still trying to get my network fixed. I have a fresh install of Ubuntu dual-booting on a machine with Windows XP. My network is a Sonicwall SOHO firewall/router connected via a cable modem connection. There is 1 other computer on my network. It's configured via NAT. My network works fine (although I'm having problems getting a server accessible to the outside world, but that's a different story) except for 1 major problem. Anytime I run a usenet binary grabber the network locks up and stops working. It doesn't happen right away but after 5 minutes or so it'll just stop. I can do a traceroute and find everything being routed right back to my own computer. Everything should be using the router as a gateway which it does normally, but at some point during newsgroup downloading it stops and sends everything back to my computer. I can't connect to any outside computer, whether I try a domain name or the direct IP address. I can still connect back to localhost using localhost, 127.0.01 or my internal lan address but I can't even get out to the router. This behavior only happens when using usenet tools. I haven't been able to duplicate the behavior using anything else. I've tried with multiple programs as well (PAN, newsbin-via wine, etc) so I don't believe they are the problem. The same computer has no problems if I boot into Windows though. Shutting eth0 down and restarting does nothing. The only way I can get the net back is to reboot. Anyone have a clue what I can do to troubleshoot this? I'm at my wits end. Thanks.

aragon127
07-05-2005, 07:59 AM
This is duplicated in FTP as well so it's not usenet only. Any one wanna lend a hand here?

jumpedintothefire
07-07-2005, 11:36 AM
Sounds like a nic driver issue to me, what is the nic? is it sharing a irq? if so, with what?

aragon127
07-07-2005, 05:40 PM
It's a realtek pci card. I don't think it's sharing an IRQ. How do I check? Thanks.

je_fro
07-07-2005, 05:51 PM
cat /proc/interrupts

aragon127
07-07-2005, 06:04 PM
Not sure what this means, but here it is:

CPU0
0: 76798782 IO-APIC-edge timer
1: 5123 IO-APIC-edge i8042
7: 0 IO-APIC-edge parport0
8: 1 IO-APIC-edge rtc
9: 0 IO-APIC-level acpi
10: 53792 IO-APIC-level uhci_hcd, uhci_hcd, uhci_hcd
12: 371083 IO-APIC-edge i8042
14: 306602 IO-APIC-edge ide0
15: 607146 IO-APIC-edge ide1
16: 71364 IO-APIC-level ohci_hcd, CS46XX
17: 15184 IO-APIC-level ide3, ehci_hcd
19: 41045 IO-APIC-level ohci_hcd, eth0
NMI: 0
LOC: 76799312
ERR: 95871
MIS: 18

jumpedintothefire
07-10-2005, 01:33 PM
19: 41045 IO-APIC-level ohci_hcd, eth0

Think that is a usb2 controller.
What kind of usb stuff do you have connected?

aragon127
07-10-2005, 04:30 PM
I have a usb pci card and built-in usb. That's all. The ethernet card is pci as well though.

jumpedintothefire
07-10-2005, 06:08 PM
> 10: 53792 IO-APIC-level uhci_hcd, uhci_hcd, uhci_hcd
I think, that might be your add on card usb card.
what doe 'lspci' output?
I'd, try swapping the usb and nic card around, the nic might end up with an irq by it's self...