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14 Posts

06-24-2008

Texas

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Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-06-24, 17:37 PM
I have an R61 ThinkPad with 4 gig RAM, Vista 64, T9300, and the Intel 4965AGN wireless network card. The 4965 can connect to the wireless network (WPA2-AES), browse the web, download files, etc. The problem is the network card dies when attempting to copy large files on the network. The status light blinks, and then about 30 seconds into the copy, the light goes solid and the connection is dead. No repair connection efforts succeed. The only cure is to reboot.

I have tried the drivers at the Intel and Lenovo sites. Each has slightly different results, but all result in the 4965 becoming non-responsive. I have completely uninstalled drivers when switching between the different versions. I have tried driver only and driver/software installs with no success.

There are 3 other wireless computers on the network that can copy without a problem. The router is an N router. The other computers have G connections.

What is the problem? More important, what is the solution? Bad card? (I received the notebook recently, and this has never worked.)
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9351 Posts

11-27-2007

SK

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Re: Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-06-24, 17:53 PM
kamiller42, welcome to the forum,
 
I don't have a Vista TP with me at the moment, so you might have to look around a little for the following settings.
 
It sounds as though this could be a power management problem. If you are using Access Connections you need to ensure that in each profile you have best network performance selected in Wireless Settings / Further Settings.
There are also power management settings in Network Devices and in Device Manager, (advanced properties of adapter), which you should change as well to ensure that Windows cannot reduce power to, or turn the adapter off.
 
Edit: Typo


Message Edited by andyP on 06-24-2008 07:53 PM

Andy  

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14 Posts

06-24-2008

Texas

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Re: Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-06-24, 19:21 PM
Andy, Thank for you for the welcome and the response.

I forgot to mention something I mentioned in my first message, which was lost. (Word to wise: Do not type message and accidentally hit back and then forward on the browser. Forum software expires the message content.) I removed Access Connections a little after witnessing the problem. I wanted to simplify the equation. The other detail I forgot to mention is that the large file transfer fails about 30 seconds into the copy. It does not take long before the adapter fails. However, I will turn off the power save option and see if that makes a difference.
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11-27-2007

SK

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Re: Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-06-24, 19:34 PM


kamiller42 wrote:
.....snip...
Word to wise: Do not type message and accidentally hit back and then forward on the browser. Forum software expires the message content
...snip...

I found that out ages ago, :smileywink: then you get the time out - you hit submit and find out that you've been automatically logged out :smileymad: I now copy all posts before hitting the submit button :smileywink:. The worst case is you spend 10 minutes creating a reply with links etc., hit submit and the OP has deleted their original post :smileysurprised:
 
I've been using AC since 2001, I think, and have never had problems. I'm pretty sure you have something causing a power loss to the card.
 
Let us know how it works out.

Andy  

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14 Posts

06-24-2008

Texas

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Re: Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-06-25, 15:28 PM
I tried turning off the power option and no change. The network card still crashes.

The worst of it all is that I called Lenovo tech support hoping for some advice or to follow a good script. I told the guy the problem. His only suggested solution was to do a system restore! Wipe out everything I have done so far and start over. I reluctantly did this. The very first thing I did after the restore finished was to try and perform a copy. Same problem. Network card freezes and becomes uncontrollable.

Any other ideas? I think I will have to get a new Intel network card. If that doesn't do it, I will need a refund. Grrr...
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14 Posts

06-24-2008

Texas

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Re: Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-06-26, 17:46 PM
I know exactly what is wrong with my wireless card, but I have no solution. Maybe someone can give some advice or maybe Intel/Lenovo needs to fix a bug?

The card crashes whenever I use AES encryption. TKIP is fine. I can do WPA and WPA2 with TKIP. AES with anything bombs. This is unfortunate because AES is required for high speed N connections.

I tried changing various settings on the router (TrendNet TEW-633GR) with no success. I have also confirmed the Access Connections program has nothing to do with the crashes. If AC or Windows controls the connection, the card still bombs.
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1960 Posts

12-02-2007

AU

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Re: Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-06-28, 0:49 AM

kamiller42 wrote:

Any other ideas?


Take your laptop to another site with a different brand of 802.11n access point and see if the problem persists!  You may be fighting an AP related issue rarher than a 4695AGN problem.

 

Cheers,

 

Bill B.

------------------------------
I don't work for Lenovo
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14 Posts

06-24-2008

Texas

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Re: Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-06-30, 15:10 PM

I tried a D-Link DI-615. The card crashed.

 

Also, further testing showed an unencrypted N connection also crashes the card.  I have also tried doing a fresh Vista install. Same failure.

 

Is anyone successfully using this card with a ThinkPad in an N configuration and able to copy large files, like a 15 gig file?

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3 Posts

07-26-2008

Belgium

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Re: Intel 4965AGN Wireless Networking Crashing on Large Transfers

2008-07-26, 23:23 PM

Hi,

 

My config: R61 T7250 2GB Ram. I use Windows XP professional SP3 instead of vista. I also had file transer crashes. (tried to copy a 3GB file over the LAN from another Windows XP station). I use a US Robotics MAXg ADSL2+-router/acces point (model: 9108A) with firmware: 3.04L.01.13. Unfortunatly my setup only works in 54g (a pitty that US R MAXg 125Mbps isn't supported with the Intel 4965AGN or any other WLAn-card for that matter). Because of 54g i've used WEP-encryption instead of WPA. I've solved my problems by adjusting some settings.

 

I used this driver from the Intel website (version 11.5.1.15) .

 

These are my settings now.

 

Ad-hocchannel: 802.11b/g 11

Packet Bursting Control: enabled

 

all other settings are left at standard.

 

This worked for me.

 

Previously I had this also on standard (which is disabled); wifi modus: 802.11b &802.11g (standard is all bands including 802.11a). This kept crashing on large transfers.

 

I don't believe the restriction of wifi-mode ought to have any impact ont his behaviour but apparantly packet Bursting Control does.

 

So try enabling that (and please also post your results).

 

Regards,

 

EPDM

 

Message Edited by epdm on 07-26-2008 04:25 PM
Message Edited by epdm on 07-26-2008 04:28 PM
Message Edited by epdm on 07-26-2008 04:30 PM
Message Edited by epdm on 07-26-2008 04:33 PM
Message Edited by epdm on 07-26-2008 04:35 PM
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