Jump to content
Compatible Support Forums
Sign in to follow this  
anthonyi

Kernel 2.6.8.1 & Web Browsing Issues

Recommended Posts

Hi,

 

I'm running FC2 and using a Belkin 54g wireless card/router connected to my cable modem (NTL). I use the Linuxant Driverloader software (latest version) to load Windows drivers for my wireless card.

 

Under Kernel 2.6.7 and earlier, everything is fine. However, under 2.6.8.1 and above (both kerbel packages from kernel.org and the vanilla FC2 kernel rpm) I have problems accessing *some* and only *some* websites. The issue appears as very, very slow loading. When I boot back to a 2.6.7 kernel the issue disappears; it also disappears when I boot into WinXP. The issue is entirely reproducable and affects the same websites each time.

 

I'm guessing it's a kernel configuration issue, but having stepped through the config options I can't find the one that's causing me a problem...

 

Any ideas? It's driving me nuts... :-)

 

Anthony

 

 

Share this post


Link to post
Share on other sites

Hi,

 

I can get to those...an example site that I have problems with is http://www.majorgeeks.com

 

It loads fine when running 2.6.7 but is extremely slow under 2.6.8.1 - it does appear *eventually* but something is clearly not right.

 

Some time ago I added the following lines to /etc/modprobe.conf

 

alias net-pf-10 off

alias ipv6 off

 

which was supposed to fix the ipv6 DNS address resolution issue (and did seem to for 2.6.7). I've tried remming out these lines and booting 2.6.8.1 again but it made no difference.

 

I can't see this as anything other than a config issue but I've reached the limit of my linux knowledge (converted a couple of months ago so still very new to this stuff).

 

Cheers,

Anthony

 

 

Share this post


Link to post
Share on other sites

Try this peice of code below on the cmd line and see if you get some improvement. I have it as a startup script. Remember this is debian and I know little about redhat or fedora.

 

 

-------------------------

start up script goes in.

-------------------------

./init.d/dumbfix.sh

./rcS.d/S76dumbfix

--------------------

code

-----------------------------------

echo 0 > /proc/sys/net/ipv4/tcp_ecn

-----------------------------------

Share this post


Link to post
Share on other sites

was there a specific issue with the 2.6.7 kernel which prompted you to use

the 2.6.8.1 instead?

 

since you have both available, you could compare the varied /proc/sys/net/ipv4/*

and ipv6/* settings - that's just a guess, though. No need to look in ipv6

if 'ifconfig' doesn't have a 'inet6 addr' line.

 

what's the most recent kernel Linuxant has tested their driver?

 

my €0,02 - use what works and don't update the kernel unless you have a specific

security/driver reason.

 

 

Share this post


Link to post
Share on other sites

I guess I'm just trying to educate myself a little about the process of compiling a kernel that best matches my hardware.

 

I see that Linuxant have released version 2.05 of their driver today, so I'll try that first.

 

Thanks for the input.

 

Anthony

Share this post


Link to post
Share on other sites

ok, if you're getting joy from building kernels, then one thing you could do

is compare the original 2.6.7 config very carefully against the 2.6.8.1 config.

(if you haven't already, that is)

 

"diff /boot/config-2.6.7 /boot/config-2.6.8.1"

 

anything interesting in the output?

 

one way of expressing the design philosophy (as I understand it) is the kernel

that best matches your hardware is the kernel which has loaded the modules

your hardware needs.

 

 

Share this post


Link to post
Share on other sites

I bet the kernel does not have DHCP set to run on startup as a module or compiled into the kernel. Darn, I wish I could remember where the setting is exactly in the network modules during the compile.

Share this post


Link to post
Share on other sites

2.6.9-rc1 didn't help either...

 

Looks like I'm stuck with 2.6.7 for the time being...not that that is a problem, I just want to know why I have this problem!

 

Thanks all for the input.

Share this post


Link to post
Share on other sites

I was having the same problem and after much searching I found a solution, I think it was on a kernel list.

I quote:-

 

-----------------

 

echo 0 > /proc/sys/net/ipv4/tcp_default_win_scale

 

 

or by adding a line like:

 

 

net.ipv4.tcp_default_win_scale = 0

 

 

to /etc/sysctl.conf.

 

-----------------

 

Apparently it actually due to a bug in some routers.

Share this post


Link to post
Share on other sites

Hi all. I joined the forum just to say thanks. The above solution worked for me with FC2 2.6.8-1.521 behind a cheap Belkin cable/dsl Router - sorry I can't remember or easily find out the exact make (I have to go to another room for that!)

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×