Arch Linux

ThePhoenix

Member

Registered: 2009-12-27

Posts: 2

Weird limited connectivity

Hello everybody,

I'm experiencing a weird limited connectivity scenario with my ethernet card Realtek 8139 (release 10).
The problem is that whenever I try to access a web page, only the first part of the page is received.

Here is the scenario:
-the card is sensing the network => green light on
-the kernel is detecting the card (module 8139too) and assign to it a good IRQ
-the DHCP server (192.168.1.1) is correctly assigning the IP 192.168.1.2 to my network interface
-the DNS resolution is working good
-the pings to other hosts on the network/internet is ok
-there is no timeout/full receive buffers/unhandled IRQs messages indicated by the kernel
-the MTU is set to 1500, but even with smaller values the problem is still there (I tried values of 1492, 1454, 1000, 500)
-I try seeing the pages through both Firefox and command-line Links
-on Windows the network card is working perfectly without any issue (I'm writing from the dual-booted Windows right now)
-this problem is happening on every Linux distro I have tried (each with different kernels): full Archlinux, Live Archlinux 2007.08, grml 2008, grml 2009.10

Here are some logs:
http://www.qitty.net/tmp/ifconfig.txt
http://www.qitty.net/tmp/ping.txt

http://www.qitty.net/tmp/screenshot.jpg
http://www.qitty.net/tmp/polito.pcap (as you can see, no requests are going out, even if the page is missing some elements)

http://www.qitty.net/tmp/dmesg.txt (note that the module 8139cp was loaded automatically, but I manually unloaded it before doing the tests)
http://www.qitty.net/tmp/messages.txt

I have no other ideas about why this is happening...maybe Windows updated some values deep inside the firmware and Linux is not able to cope with these new values. I installed the latest drivers from realtek and checked all the available settings in Windows, but nothing strange is catching my eyes.
Apart fom this, this issue is reproducible and for any web-page, it stops loading after a give amount.

Thanks in advance,
Andrea

ThePhoenix

Member

Registered: 2009-12-27

Posts: 2

Re: Weird limited connectivity

Update:

-the problem is happening even with my IPW2200 wireless card
-I found out that for each HTTP request, my cards will download up to 5.5KB.
Examples:

# wget google.it => I will get a full 'index.html' page (as it's 4.9KB)
# wget google.it/intl/it_it/images/logo.gif => I will get the first 5.5KB of the image and wget will hang, undefinitely waiting for the remaining part of the image

robmaloy

Member

From: Germany

Registered: 2008-05-14

Posts: 263

Re: Weird limited connectivity

strange thing is, you never get a HTTP 200 OK message (according to polito.pcap)

edit:
can you post a longer PING?

edit2:
also a PING when running windoze (min. 15 pings)

plz ping both a web address and your router/other machine on your LAN

Last edited by robmaloy (2009-12-28 14:50:30)

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☃ Snowman ☃

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: Weird limited connectivity

Just to be on the safe side blacklist 8139cp, it says it doesn't recognize the card and that you need to use 8130too but better make sure it doesn't even try to load.
Also try to disable ipv6 http://wiki.archlinux.org/index.php/IPv … the_Module

Can't remember anything else for now.

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R00KIE
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