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problems with new Centrino wireless notebook

N

NTB

Diamond Member
My brother got a new laptop this week, which included an Intel 2200 b/g wireless network card. It connects to our wireless network just fine, picks up an ip, and reports a full 11mbps connection (the router is just in the next room). But it takes for ever to pull up a webpage - if it comes up at all. Trying to ping anything - even one of the other computers on the network - times out more often than not. Any suggestions? The router is a netgear 802.11b model, if that helps anything.

Nate
 
Don't know if I've necessarily *solved* the problem, but I found a way around it. As long as the laptop is plugged in (rather than running off the battery), the wireless connection works flawlessly.

Nate
 
Has it got power settings where it throttles back CPU when on battery power? Not sure if this would cause the issue but you may want to try setting the power to Max Performance when running off battery to see if it helps
 
There are power options that you need to set for your laptop when you are running off the battery. It is trying to save battery power by doing something to your wireless card. There is probably a separate option for the wireless card.

Lisa
 
Download DrTCP: http://www.dslreports.com/front/DRTCP021.exe

Run the program, it will show the current settings of TCP/IP parameters. Write them down.

You can change any variable that you want, click Apply, and reboot the computer, if no good; you can always change to your original values.

Start with:

MaxMTU - for DSL =1492, Cable=1500, ISDN -1322, DialUp=576

Tcp Receive - 256960 (This is the variable to play with).

Window Scaling - Yes

Time Stamping - No

Selective Acks - Yes

Path MTU Discovery - Yes.

Black Hole - NO

Max Duplicate - 2

TTL - 64

Notice it said above Start with

These settings are not written in "stone" there is variability depending on the computer other setting. So try few setting and measure your Download for each setting.

In addition, in case a person has a Router the Router's MTU if set differently can affect the general MTU.

Link: Measuring the "Speed" of Internet Connection.

:sun:
 
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