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Community Manager
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Also dropping internet connection Centrino 6205

Like others posting on here I am also experiencing intermittent dropping of internet connection with Intel Centrino Advance N 6205 in Dell Latitude E6420 running Windows 7 Professional x64. I am running driver version 15.2.0.19 but previous versions still had the same problem. The problem is not related to my router as other devices can connect to the internet by both Ethernet and WiFi. I am using Channel 1 to avoid interference from nearby networks on channels 6 and 11. For the benefit of other users I am using a BT HomeHub 2.

When I lose internet connection:

Checking Proset it shows "Connected to my wireless network but Internet Access is NO"

I cannot ping the router with its IP address

I cannot connect to the router through a browser

If I logon to my router from another device it shows that this problem laptop is connected to the router

If I reset either the router or reset Proset the connection is re-established

There is nothing showing in the Wireless Event Viewer or Windows Event Viewer

28 Replies
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Community Manager
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This is exactly the same problem I have with the 6235, which is identical to the 6205 except for Bluetooth. I think we still need more people to manifest these problems for Intel to act.

Can you check whether the problem disappears when you disable 802.11n mode in the driver settings? That was the case for me (although not really a cure to the problem as your adapter looses its high-speed features)

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Community Manager
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I have created a new post - the problem could be related to Event log:

WLAN Extensibility Module has stopped.

Module Path: C:\Windows\System32\IWMSSvc.dll

I didn't try disabling 802.11n yet.

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Community Manager
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I am also having same issue with inter centrino 6205 for intermittent connection for wireless networks

more annoying is - most of the time - its not getting connected to trusted wifi-network even 'connect automatically' is selected for trusted wifi network. we need to connect is back. Its using intel pro wireless manager to manage different wireless network profile. Laptop having win 7 prof 64-bit and windows wireless manager is also there but i am thinking of removing intel wireless pro manager if there is any conflicts in settings of that and windows manager is there

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Community Manager
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Hi mrfaize,

I understand that you already tested the driver version 15.2.0.19 and a previous version and you still have the same problem.

You may try 5GHz channel bonding and MIMO, here are two links that will give you more information:

http://www.intel.com/support/wireless/sb/CS-030709.htm http://www.intel.com/support/wireless/sb/CS-030709.htm

http://www.intel.com/support/wireless/wlan/4965agn/sb/CS-028449.htm http://www.intel.com/support/wireless/wlan/4965agn/sb/CS-028449.htm

If you continue having the same problem you can contact your system manufacturer for more assistance.

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Community Manager
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I can't try 5GHz bonding or MIMO as my router does not support these features.

No one ever wants to take responsibility as it's easy to pass the buck to another manufacturer.

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Community Manager
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I have the same problem. Disabling it does work for me, but when the computer goes to sleep/is turned off or logged off it fails to reconnect. I then have to disable 6235 and re enable it, sometimes having to reboot.

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Community Manager
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Ditto... The only thing that is working right now is the workaround to disable 802.11n. Tried several other fixes including updating to latest driver (15.3), changing security settings on my AP, etc, etc.

This in on a Dell E6530, Intel i7 3520M, Intel HD Graphics 4000.

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Community Manager
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Update: disabling 802.11n no longer works for me.

Also tried

-disabling blue tooth as some others suggested

-using old drivers

-using latest driver

-reformatting

I am currently using a wall connection, which is working for now but obviously I want wifi. I am purchasing an external mini USB wifi device so I can use wifi until this issue is resolved.

I am working on a brand new Samsung Series 5 UltraBook

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Community Manager
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When will an actual fix be implemented for this? This is causing some issues in our Enterprise as HP 8470p laptops are being deployed with the Intel Centrino N 6205 adapter. A few notes worth mentioning.

- Win7 64 bit Enterprise OS

- Multiple driver versions tested (15.1.1.1 from 7/16/2012, 15.1.1.1 from 6/8/12, and 15.1.1.1 from 5/29/12) - Not sure why HP never changed the version number but there were actual changes.

May 2012)

- Multiple 8470p laptops experiencing intermittent wireless drops. Sometimes these drops require a full logoff or reboot.

- Problem occurs on 3 different types of routers (2 newer netgear and 1 older linksys). No wireless issues in the enterprise but I'm unsure of our wireless access points but it's old.

- Power management setting (with the 1 - 5 option) is missing under the advanced tab - strange as this is on ever other HP model laptop.

- Issues more prevelent when using VPN over wireless

Other related threads - I'll continue to add to this list as I come across them

https://supportforums.cisco.com/thread/2125425 Intermittent dropouts Intel Centrino Advanced-N 6205|2125425 - Cisco Support Community

/thread/29992 http://communities.intel.com/thread/29992

/message/153884 http://communities.intel.com/message/153884

http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/urgent-T420-with-N6205-keeps-dropping-wirel... http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/urgent-T420-with-N6205-keeps-dropping-wirel...

http://forums.lenovo.com/t5/X-Series-Tablet-ThinkPad-Laptops/Centrino-Advanced-N-6205-Wireless-brows... http://forums.lenovo.com/t5/X-Series-Tablet-ThinkPad-Laptops/Centrino-Advanced-N-6205-Wireless-brows...

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Community Manager
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I was able to correct this issue with the following workaround.

 

Device Manager > Intel Centrino 6205 adapter properties > Advanced Tab > 802.11n mode - SET TO DISABLE

 

After disabling 802.11n everything immediately worked properly.

I can confirm this issue affects at least these two routers; even with the latest firmware : Netgear WNR2000 and Netgear WNR1000v3.

Another thing to mention is that both devices were HP 8470p elitebook laptops.

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Community Manager
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I had the same problem. I received a new laptop Dell E6330 with Windows 7 Enterprise 64 bit.

Experienced intermittent, but very frequent wifi drop with Intel Centrino advanced N 6205, driver6205 update 15.2.019.

I tried to update in Control Panel, Device manager. the drive but reported I already had the latest update.

Then I went to the Intel website and let the system find the correct update automatically. It found update 15.3.1.2, which I installed.

http://www.intel.com/ www.intel.com

It has now been > 12 hours and my wifi connecting to my home network with D-link router is working perfectly. I am still worried that the problem will come back, but it seems to be fixed.

I wonder if I did not have the correct driver for the 64bit Windows 7 OS initially. My company installs the OS for everyone.

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Community Manager
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I have had this problem on my laptop I bought in August since the first day. I can't get anybody to fix this. I have a Samsung NP700Z3A.

I've upgraded the driver to 15.3.1.2. I know its the wireless card because I disabled the Intel card and used a cheap 30 dollar Netgrear external usb wirless card and it works just fine.

I finally have this working though, but the way I have it working is by disabling the bluetooth on the wireless card. Samsung comes with software called "Easy Settings" which allows me to disable the bluetooth. I have to disable it and it works fine. When enabled, it has the dropping issues. In fact sometimes it doesn't even connect to the wireless router.

This IS a problem with the Intel card. Intel needs to fix this because I would like to use the bluetooth on this at some point.

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Community Manager
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We usually recommend installing the latest tested drivers from the computer manufacturer, since those would have been tested with your specific components and set ups.

A generic driver to test is the latest version 15.6 (would install 15.4 in Windows* 7). See the link below to this download:

http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=3316&DwnldID=22495&ProductFamily=Wirel... http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=3316&DwnldID=22495&ProductFamily=Wirel...

Bluetooth should not cause any interference with this card since it is a separate component on this laptop, it might be a good idea indeed to verify with Samsung* to take care of this interference that you are experiencing on this laptop.

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Beginner
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I have the latest driver, and a brand new Centrino 6205 (my IT department replaced the original one hoping that it wil solve the problem with the constant drop-outs) and I am experiencing the same problems! After the computer is turned off or turns automatically off it cannot find again the connection. The computer managed to log on the the wifi only once!

I have a lenovo X220, and I really don't want to ahve to replace it with a bigger lenovo that has another wifi card. My employer provided me with a test computer (a bigger lenovo) and it can go off and on to the wireless without any problems.

Now I am considering getting a new access point since centrino n 6205 does not seem to work properly with my current access point (even though all the other computers, tables, phones at home connect without any problems) but I don't want to get another access point that does not work. Do you know of any access point that works with Centrino N 6205 without giving any problems? Which technical specifications should it have, to make sure it works properly with 6205 and does not have drop-outs?

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Employee
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You may want to download the latest Intel® wireless driver since several users have reported it has solved the issue for them.

Intel® PROSet/ Wireless Software Downloads

http://www.intel.com/support/wireless/wtech/proset-ws/sb/CS-034041.htm http://www.intel.com/support/wireless/wtech/proset-ws/sb/CS-034041.htm

Additionally you may also check if the router or AP is using WPA(2)-AES, a fixed and least congested 2.4GHz channel, and the latest firmware installed. Other recommendations are available from the following articles:

How do I improve my 802.11n wireless performance?

http://www.intel.com/support/wireless/wlan/4965agn/sb/CS-028449.htm http://www.intel.com/support/wireless/wlan/4965agn/sb/CS-028449.htm

Possible interference by other wireless devices may impact 802.11n performance

http://www.intel.com/support/wireless/wlan/sb/CS-031509.htm http://www.intel.com/support/wireless/wlan/sb/CS-031509.htm

Access Point (AP) firmware updates may resolve wireless network issues

http://www.intel.com/support/wireless/wlan/sb/CS-006321.htm http://www.intel.com/support/wireless/wlan/sb/CS-006321.htm

Power save polling (PSP) causes connection issues with access points

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

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Beginner
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Joe, I've got the latest intel drivers on my Lenovo Helix and have the same issues with the 6502. Internet drops out and slows to dial-up type speeds. I'm less than 10 feet from my router through one (wooden studs/drywall) wall. Need a fix that works!!

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Employee
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You may want to test your system with a different router/network or also contact your system manufacturer in case of a possible hardware issue. We have different systems with this adapter and no connection issues at all.

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Beginner
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I have the same problem.

I was on Windows 8 64 bit Professional.

The problem started after I upgraded to Windows 8.1 64 bit Professional.

The problem happen specifically when I connect to my workplace VPN.

It happens every time I Remote Desktop or connect to Ctirix over a VPN connection.

After the connection drops, the Connections in the Networks charm bar (the blue section that slides in when I click on wireless icon on the status bar) disappears. But in "View Connections", I still see that my VPN is connected. I cannot disconnect the VPN because trying to disconnect it brings up the Networks charm bar and there is no VPN connection visible.

From here on, if I disable and enable the Intel Centrino 6205 device in Device Manager, I will get back the wireless connection but the Connections section on the Networks charm bar is still gone ie I cannot connect to VPN.

If I reboot, the Connections on Networks charm bar returns.

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Beginner
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I forgot to mention in previous post that I have updated driver to 15.10.4.2.

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