Dell (Broadcom) 1505 802.11n wireless adapter disconnects and latency
Hi, I have a Dell (Broadcom) 1505 802.11n wireless adapter. I'm running Windows 7 RC.I am experiencing 2-3 drops every day. Right clicking on the wireless icon and repairing always fixes the problem. My wireless router is a D-Link DIR-825. None of my other wireless devices ever have problems, only this particular computer. The computer in question is 8 feet from the WAP, and has 100% signal strength. The disconnects do not seem to be tied to any particular activity. For example, I can download a 2GB file at 22mbps with no issues, only to be disconnected while doing some light browsing later in the day.In addition to the disconnects, I'm experiencing latency to the internal GW around 14-18ms. All my other wireless devices ping the internal GW @ 1ms without fail.I experience the problem at both 2.4GHz and 5GHz. Over the past few days I've performed the usual troubleshooting steps (rebooting, resetting the WAP, disabling IPv6,re-installing the driver, etc), to no avail. Any help or insight would be much appreciated. Please let me know if any additional information is required.---Interface name: Wireless Network Connection Driver : Dell Wireless 1505 Draft 802.11n WLAN Mini-Car Vendor : Broadcom Provider : Microsoft Date : 10/1/2008 Version : 4.176.75.23 INF file : C:\Windows\INF\oem3.inf Files : 2 total C:\Windows\system32\DRIVERS\BCMWL664.SYS C:\Windows\system32\drivers\vwifibus.sys Type : Native Wi-Fi Driver Radio types supported : 802.11n 802.11a 802.11g 802.11b FIPS 140-2 mode supported : No Hosted network supported : Yes Authentication and cipher supported in infrastructure mode: Open None Open WEP Shared None Shared WEP WPA2-Enterprise TKIP WPA2-Personal TKIP WPA2-Enterprise CCMP WPA2-Personal CCMP WPA-Enterprise TKIP WPA-Personal TKIP WPA-Enterprise CCMP WPA-Personal CCMP Authentication and cipher supported in ad-hoc mode: WPA2-Personal CCMP Open None Open WEP
July 9th, 2009 2:38pm

Couple questions:Did this happen before Windows Rc?What type of computer do you have?Did you install the wireless adapter into your computer or did it com installed on your computer?
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July 9th, 2009 5:39pm

Couple questions:Did this happen before Windows Rc?What type of computer do you have?Did you install the wireless adapter into your computer or did it com installed on your computer? - I installed Windows RC on the system the day I received it from Dell (one week ago to the day), so there's no way for me to know the answer to that question. I do believe that the adapter performs quite well under Vista (x64), however Iam basing that statement solely on my pre-purchase research.- The computer is a Dell Studio XPS 435MT: Intel i7-940 @ 2.93 GHz/12 GB DDR3 SDRAM @ 1067MHz/2x640 GB SATA II drives in a hardware RAID 1 config- The wireless adapter came pre-installed from Dell.
July 9th, 2009 7:03pm

A bit more information...This morning when I was disconnected from the Internet and did the repair, the problem was reported to be that W7 somehowlost my gateway address.
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July 10th, 2009 6:01pm

Seems like this is becoming a common concern, especially with Wireless N. Latency is an issue that does not seem to be discussed, but high levels cause audio crackling and distortion. This is a problem with the MS provided drivers for my Linksys WMP300N card, and I've resolved it by using earlier drivers that I currently use with Vista. Unfortunately, the network still drops between 1/2 and 1 hour. Mine will not repair though - requires re-boot to resolve.
July 11th, 2009 9:32pm

Detailed information after the last failure. Any thoughts?Error found after repair was "Default Gateway was unavailable." No other devices lost connectivity. Diagnostics Information (Network Adapter) Details about network adapter diagnosis: Network adapter Wireless Network Connection driver information: Description . . . . . . . . . . : Dell Wireless 1505 Draft 802.11n WLAN Mini-Card Manufacturer . . . . . . . . . : Broadcom Provider . . . . . . . . . . . : Microsoft Version . . . . . . . . . . . : 4.176.75.18 Inf File Name . . . . . . . . . : C:\Windows\INF\netbc664.inf Inf File Date . . . . . . . . . : Wednesday, April 22, 2009 12:41:54 AM Section Name . . . . . . . . . : BCM43XNM_NT61 Hardware ID . . . . . . . . . . : pci\ven_14e4&dev_4328 Instance Status Flags . . . . . : 0x180200a Device Manager Status Code . . : 0 IfType . . . . . . . . . . . . : 71 Physical Media Type . . . . . . : 9 Diagnostics Information (Wireless Connectivity) Details about wireless connectivity diagnosis: Information for connection being diagnosed Interface GUID: 0ba36cf0-0891-44c4-a991-9609b45eb613 Interface name: Dell Wireless 1505 Draft 802.11n WLAN Mini-Card Interface type: Native WiFi Connection incident diagnosed Auto Configuration ID: 1 Connection ID: 1 Connection status summary Connection started at: 2009-07-13 13:43:28-858 Profile match: Success Pre-Association: Success Association: Success Security and Authentication: Success List of visible access point(s): 5 item(s) total, 5 item(s) displayed BSSID BSS Type PHY Signal(dB) Chnl/freq SSID ------------------------------------------------------------------------- 00-24-01-[REMOVED] Infra <unknown> -51 3 (Unnamed Network) 12-19-5E-[REMOVED] Infra g -91 11 (Unnamed Network) 00-24-01-[REMOVED] Infra <unknown> -52 5230000 (Unnamed Network) 00-24-01-[REMOVED] Infra <unknown> -46 3 [REMOVED] 00-24-01-[REMOVED] Infra <unknown> -53 5230000 [REMOVED] Connection History Information for Auto Configuration ID 1 List of visible networks: 3 item(s) total, 3 item(s) displayed BSS Type PHY Security Signal(RSSI) Compatible SSID ------------------------------------------------------------------------------ Infra <unknown> Yes 85 Yes (Unnamed Network) Infra g Yes 0 Yes (Unnamed Network) Infra <unknown> Yes 88 Yes [REMOVED] List of preferred networks: 1 item(s) Profile: [REMOVED] SSID: [REMOVED] SSID length: [REMOVED] Connection mode: Infra Security: Yes Set by group policy: No Connect even if network is not broadcasting: No Connectable: Yes Information for Connection ID 1 Connection started at: 2009-07-13 13:43:28-858 Auto Configuration ID: 1 Profile: [REMOVED] SSID: [REMOVED] SSID length: [REMOVED] Connection mode: Infra Security: Yes Pre-Association and Association Connectivity settings provided by hardware manufacturer (IHV): No Security settings provided by hardware manufacturer (IHV): No Profile matches network requirements: Success Pre-association status: Success Association status: Success Last AP: 00-24-01-[REMOVED] Security and Authentication Configured security type: WPA2-PSK Configured encryption type: CCMP(AES) 802.1X protocol: No Key exchange initiated: Yes Unicast key received: Yes Multicast key received: Yes Number of security packets received: 0 Number of security packets sent: 0 Security attempt status: Success Connectivity Packet statistics Ndis Rx: 93131 Ndis Tx: 66177 Unicast decrypt success: 22 Multicast decrypt success: 0 Unicast decrypt failure: 0 Multicast decrypt failure: 0 Rx success: 2564 Rx failure: 20400 Tx success: 0 Tx failure: 0 Tx retry: 0 Tx multiple retry: 0 Tx max lifetime exceeded: 0 Tx ACK failure: 0 Roaming history: 0 item(s) Diagnostics Information (Wireless Connectivity) Details about wireless connectivity diagnosis: For complete information about this session see the wireless connectivity information event. Helper Class: Auto Configuration Initialize status: Success Information for connection being diagnosed Interface GUID: 0ba36cf0-0891-44c4-a991-9609b45eb613 Interface name: Dell Wireless 1505 Draft 802.11n WLAN Mini-Card Interface type: Native WiFi Result of diagnosis: There may be problem Diagnostics Information (Wireless Network Adapter) Details about wireless network adapter diagnosis: For complete information about this session see the wireless connectivity information event. Helper Class: Native WiFi MSM Initialize status: Success Information for connection being diagnosed Interface GUID: 0ba36cf0-0891-44c4-a991-9609b45eb613 Interface name: Dell Wireless 1505 Draft 802.11n WLAN Mini-Card Interface type: Native WiFi Profile: [REMOVED] SSID: [REMOVED] SSID length: [REMOVED] Connection mode: Infra Security: Yes Connect even if network is not broadcasting: Yes Result of diagnosis: There may be problem Other Networking Configuration and Logs File Name: NetworkConfiguration.cab Collection information Computer Name: JOHN Windows Version: 6.1 Architecture: amd64 Time: Monday, July 13, 2009 4:10:39 PM Publisher details Windows Network Diagnostics Detects problems with network connectivity. Package Version: 1.0 Publisher: Microsoft Windows
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July 13th, 2009 11:19pm

Same problem here. Wife has similar laptop, butwith anIntel wireless cardand she has no problems in Windows 7 RC1 with the same DIR-655 router.I have no wireless problems in Vista. Once I installed Windows 7 RC1 it kept dropping the internet like IronAddicted.
July 30th, 2009 5:58am

same problem here but i am using atheros ar9285 wireless network adapter on a new sony laptop. so this problem pr-existed on RC ?? i am using the release version ...
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October 27th, 2009 9:36am

Same issue here, using an HP 802.11n Wireless PCI Express Card LAN Adapter. I noticed on doing a tracert that all of my latency issues are directly between my wireless and the router.
December 15th, 2009 10:27pm

I am still running Vista on our Dell Studio 540 with a Broadcom 1505 802.11n wireless adapter. Every hour at a regular interval the wireless modem losses connection to the Zyxel router and needs to re-establish connection. Very irritating when working at home in a terminal session. I checked today the Broadcom site for hopefully an updated driver, but I could not find 1505 802.11n listed. Will research this futher or replace the wireless card.
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December 27th, 2009 2:24pm

Any solutions for this matter? I have a Dell Studio XPS 435t desktop, initially had Vista 64, then in January upgraded to Windows 7. At first had issues with the wireless card, then upgraded to latest driver that Dell had available. Then lots of BSODs. After analysis, BSOD crashes were found to be caused by nwifi.sys and/or bcmwl664.sys. So, did a google search for 1505 502.11n wireless drivers and found one at pcpitstop.com Installed, but still getting dropped connections twice and hour. Rolled back to previous driver version, then just deleted the driver through device manager - and restarted PC. Windows automatically found the drivers in it's database - but that still didn't stop the dropped connections. I have a Linksys router, and it was working just fine until I upgraded to Windows 7. Then dropped connections and latency and BSODs. I'm going to try calling Dell (again!) - there's got to be a solution for this. It's infuriating!
May 6th, 2010 8:20am

I don't know if this will fix your problem or not but it is worth a try. In W7 (in the ones I maintain) the power management is set by default to allow the system to power down the NICs both wired and wireless if equiped. Same thing for USBs but that's another story...... My theory is that if the wireless card does not see some activity for a certain period of time, it shuts down to save power. Hence, the loss of a connection to the wireless router that is fixed by manually reconnecting. Try disabling the power down function and see what happens. To do this, go to "start", type "power options" in the "Start Search" box, and then click "Power Options" in the Programs list. Under the selected power plan, click "Change plan settings". Click "Change advanced power settings". Then disable the system's ability to power down the wireless or wired NIC. Please advise if this fixes the problem or not. Thanks!
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May 6th, 2010 7:29pm

Yeah, I've tried that. USB, Bluetooth and Wireless all have the ability to keep the computer 'awake' - or waken it from sleep. The Wireless card settings are at 'maximum performance' and not in power saving mode. I think I'm going to call Dell. I got another BSOD - arrrgh.
May 7th, 2010 8:24am

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