I just recieved my Latitude E6400 today. I like the laptop, but the Intel Wifi Link 5300 AGN adapter continually drops my wireless connections to my home Linksys WRT54G access point and router. This is a version 5 Linksys unit running in mixed b/g mode with WEP encryption. It is running with a unique SSID which is not broadcast.
At first, my connections would drop and it seemed related to the Control Point software preinstalled on the E6400. So I uninstalled the Control Point System Management and Connection Management software, and this seemed to result in a small improvement: I can do a download successfully, but if I'm idle any amount of time the connection drops. This last makes me think power to the Wifi Link card might be getting turned off somewhere if there is no activity. However the Control Point Security Manager software is still installed (as it came from the factory) and might also be contributing to the problem.
I believe this is the first time I've used an 802.11n-compatible wifi card in my home.
The driver version for the Wifi Link is 126.96.36.199 and is dated 07/08/2008.
The Linksys access point has been here a couple of years and is running Linksys firmware version v1.00.6. It is set up for 128-bit WEP encryption. I've had numerous laptops connect to it, all with older Broadcom b/g cards, and as long as the WEP encryption is set properly there has not been a connection problem.
I'm going to a Panera now to see if I can duplicate the connection dropping issue.
Help is much appreciated.
Hi Bob. I'm having a very similar issue with some E6400's with 5300AGN adapters.
Some users are reporting the adapter drops thier connection every 20 min or so.
Were you able to find a resolution for this issue?
I've got the same issue with a new E4300, I think the problem is with the Intel 5300 Drivers. After a seeming random amount of time (could be 5 minutes or 45) any new TCP connections over the wireless adapter fail, ICMP (Ping) and UDP work fine, and existing (Open) TCP sessions are ok as well (remote desktop sessions, SSH sessions, etc)
The card also randomly has issues pulling an IP address (shows connected to the access point)
This is on a freshly installed XP SP3 install, with only the dell network drivers (onboard) and the intel wireless drivers (from dells support site)
This issue happens when connected to a Linksys 54g access point, and a friends Netgear router as well.
After a little google-searching it looks like there is an extensive tread on a lenovo support site about Thinkpads with the same problem
I've just rebuilt with Vista Enterprise 64bit, we'll see if the drivers are any more stable under Vista
Anyone got a quick fix for this issue?
I've found that some of these issues have been resolved by ramping up the Power Management slider in the 5300 AGN properties window to max has resolved the issue for a few users.
I found some info in an intel release notes document.
Searching for 5300 drivers i got here:
and then clicking the release notes link for the driver i get this:
here is one of the known issues:
After the association flow completes, the adapter stays awake (as in CAM mode) for 10 seconds, and then acts according to the PowerIndex (PI) regkey. PI should not be change during this period. The association timeout is 10 seconds. Using the Linksys access point, association occurs every 60 seconds, resulting in deauthentication and disconnection from the Linkysys access point.
The regkey in the statement above is directly controled by the power management slider i mentioned above. I think for some of my users cranking the setting to max has resolved the issue.
Hope this helps. Let me know if you get anywhere with this.
Thanks for the reply! Sadly this has not resolved the issue (it was already set on the highest setting)
Its an odd problem, since it does not really 'drop' my connection, it just seems unable to open new TCP sessions.
I had exactly the same problem as you describe. I tried a number of things to resolve it without success - wireless adapter power adjustments, roaming adjustments, wireless adapter de-install/re-install, Linksys WRT54G firmware upgrade, TCP/IP reset, etc.
Finally, I resolved the problem by disabling my WEP encryption. Apparently, there is some incompatibility between the Intel Wifi Link 5300 AGN adapter and my Linksys WRT54G router relative to WEP encryption. Currently, encryption is disabled, but I plan to try other encryption modes (e.g. WPA) to secure my wireless network.
Rex L. Farris
I have experienced the same problem as everyone else. This problem only seems to happen with home wireless networks. I have power saving, Ad Hoc Channel, throughput enhancement. When this did not work I uninstalled and reinstalled teh driver, minus teh Intel utility and let WIndows manage my wireless with the same result. Regardless you change your encryption method as no encryption is still more secure than WEP.
I have the same problem here with a Netgear router. When the Intel wifi is enabled, it frequently drops the router and any other computers connected lose connectivity as well. When I disable the wifi, all other connections are fine. Do any Dell technicians monitor these boards to address these issues?
I finally got my E6400 working on my home wireless. I have a Linksys WRT300N router and I found that I could connect without a problem when I disabled encryption, but when I re-enabled encryption I would either connect at 1Mbps or not at all. To resolve this problem I downloaded the latest driver from Intels site, uninstalled the Intel utility and let Windows manage my wireless connections. I than reset my router back to factory defualts as I had changed quite a few settings and I did not know which one(s) were casuing the problem. I than made one change at a time to see what caused my loss of connection. I found that my encryption was set to high, as I had it set to WPA2. Windos XP SP2 and above supports WPA2, but the wireless drive must also support it for it to support the passing of WPA2 capabilities to Windows Wireless Auto Configuration. This wireless card must not support if so I set my encryption level to WPA and I could connect just fine. I than changed my radio band to Wide - 40MHz and my connection speed dropped to 1Mbps. This card should work with wide as that is for N networks and this card is an N card, so I set the band back to Auto and my connection speed ramped back up to 54Mbps. I also changed the encryption algorithm from AES to TKIP. You will also need to change three settings in the wireless cards driver as well - From the Advanced tab of the wireless card driver, make the following changes: Power Management - Highest, Roaming Aggressiveness - Lowest, Power Saver Mode - Off. Also on the power management tab, disable power management.
FWIW, the Intel 5300 in my M4400 (same card as yours) supports WPA2.
I'm using WPA2 to connect to a "g" 2-wire 2701 router, and though I prefer TKIP (less intrusive polling) it connects fine with AES as well.
Default settings of Power Management - Highest, Roaming Aggressiveness - Medium, and Power Saving Mode - Off.
Latest Dell driver (188.8.131.52) but I uninstalled the included PROSet software.
You might try installing the Vista SP1 Wireless Feature Pack from the Dell downloads page for your system + OS; it seemed to help the stability of my WiFi as well as my BlueTooth connections.
I'm running a fresh install of Vista Business x64.
x64 Precision M4400/Quad QX9300/WXGA+ LED/8GB DDR2/256GB Samsung SSD/NVidia Quadro 770M/8xDVDRW+-/9 cell/EPort/BT/FIPS + Backlit KB/VZW-WWAN/56k/Intel 5300 a/b/g/n
x64 Latitude E6400/Duo T9400/WXGA LED/8GB DDR2/128GB Corsair SSD/ Intel X4500MHD/8xDVDRW+-/9 cell/EPort/BT/UPEK + Backlit KB/TEL-WWAN/56k/Intel 5300 a/b/g/n