E1505 wireless internet connection problem

Question

Hi,   I have an E1505 with the Intel 3945ABG card.  I have a Netgear WGT624v3 router.  I have Windows XP Pro SP2.   Up until a week or so ago, I could use the wireless to connect to the internet.  Now, I can't.  I am able to use wireless at full function on the INTERNAL network.  (I can connect to my wired PC, copy files and even use Remote Desktop to go to the internet.)   If I plug the E1505 into a LAN port, I have no problems connecting to the internet.  It's like the router is dropping just the wireless traffic, and just when it tries to go out.  Also, I am able to wirelessly connect to an open router in my apartment building, but still can't go to the internet.   The only changes I have made to the E1505 is to install the MS August security patches.   I don't know if this problem is the router or the E1505, but since the LAN ports are working, I suspect it's the E1505.   Things I've tried: I have upgraded the firmware on the router.  I have installed the Intel 10.5.0.1 drivers.  I have disabled UPnP (on the E1505 and the router) and the SSDP Discovery Service.  I have uninstalled all the MS August security patches.   I feel like I've tried just about everything, so any advice or insight is appreciated.. thanks..

volcano11 · Answer

When the wireless internet connection goes out, can you get it back by power cycling the router?   Steve

Brainspawn345 · Answer

Ahhhh... I figured it out. I am using VMWare with a bunch of virtual network adapters. Once I disabled all of them, the wireless connection to the internet picked up immediately. I have no idea why though...

unjdm · Answer

While it appears that you may have come upon a fix for your system, I wanted to share a bit of information that might help you should your connection start to fail. Most of the Dell laptops are using network wireless adapters manufactured by Intel. The Intel devices have an "undocumented feature" of the wireless called PSP (Power Save Polling) that works primarily when your laptop is running on the battery. This permits your wireless device to shut off devices (primarily newer routers) that it's connecting to in order to save power. The references on the Intel site (below) show you how to minimize the impact using your PC’s and Intel’s Power Management settings. To correct the problem permanently, however, you'll need to do the following:

You'll need to upgrade the firmware of your router to the latest available.

You'll also need to upgrade your Intel wireless driver to the latest available (from either Dell or Intel).

Then you'll need to make the following changes to the Wireless Router Settings:

Under the Advanced Wireless Settings:

Change the BEACON interval from 100 to 50

Change the fragmentation threshold from 2346 to 2306

Change the RTS threshold from 2347 to 2304.

Updating the router firmware and wireless device driver will fix the problem by about 80%. The three additional changes should make the problem "go away."

http://support.intel.com/support/wireless/wlan/sb/cs-006205.htm

wwatd · Answer

I have a Latitude with 3945ABG Intel ProWireless network and have been having numerous problems including intermittent dropped connection. I tried different settings for the hardware in Device Manager and even different wireless security protocol (i.e. WEP and so on). I also tried switching between Windows and Intel to 'manage WiFi' and the most updated driver from Dell.com as of this date.   It now works flawlessly.   How? I went to Intel website and downloaded the latest driver for 3945ABG. The filename is 'Intel(R)PROSetWirelessSoftwareVer10.5.0.1_32.exe'.   Have fun! ww

Networking, Internet, & Bluetooth

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