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Random Wireless Disconnects

Discussion in 'HyperWRT Firmware' started by cavenger, Jan 1, 2006.

  1. cavenger

    cavenger Network Guru Member

    Hi...I am a newbie to flashing my router. I am running the following:

    Firmware Version : v4.70.6 - HyperWRT 2.1b1 + Thibor11

    I had no problem flashing my router, but I Am getting random wireless disconnects. I only have one wireless card so it is difficult to isolate, but what is the reason for this? Is there something I can adjust? The problem is the card will disconnect, and then I have to go into the config on the card on XP and have it reconnect. IT will not reconnect on its own....

    Thanks in advance for all replies.
  2. Johnno74

    Johnno74 Network Guru Member

    I've had the same problem in the past, and I suspected it was my WRT54G1.1 and I tried numerous firmwares without resolving the problem.

    Then a friend visited and he had no problems maintaining a connection from his laptop so I started mucking about with my laptop - trying different drivers for my belkin card, re-installing SP2 & networking stack, etc etc.

    In the end I got a new card (broadcom internal mini-pci) but it had the same problem. In desperation I rebuilt my laptop from a clean format and I've had no problems.

    So, unfortunately I can't suggest an easy fix... but good luck...
  3. cavenger

    cavenger Network Guru Member

    Think I got it...

    I read in a few places about turning off Enable IEEE 802.1x authentication. I couldn't find this setting on the wireless network. So finally, I turned it off for my local area connection and this resolved the problem....weird. Anyway. it seems to be working fine now. All day long with no disconnects.
  4. cavenger

    cavenger Network Guru Member


    Its back... I think I am getting interference from my cordless phone...gotta figure it out.
  5. pvsutton

    pvsutton Network Guru Member

    Re: Nevermind...

    Had a friend who rang Linksys, who immediately fingered his cordless phone. They said only course of action was to change the phone - which he did and everything was AOK.

  6. whozyodaddy

    whozyodaddy Network Guru Member

    I am having the exact same problem! There are four computers in the household that have wireless. Two of them experience alot of random wireless disconnects. I don't believe this has happened since I installed Tofu a couple months back.

    What could be the problem??
  7. cavenger

    cavenger Network Guru Member


    Turned down my signal to the default of 50% and I will see what that does.
  8. snwbdr

    snwbdr Network Guru Member

    Change the channel on your phone I used to have the same problem. No drops for over a year. You can usually change the channel by hitting the talk button on your phone. You have to test it out then leave it once it works ok. Also I use channell 11.
  9. cavenger

    cavenger Network Guru Member

    still no luck on this...tried changing channels...still drops. If anyone can give me any troubleshooting tips, that would be great.
  10. cavenger

    cavenger Network Guru Member

    Sigh...this is really bad..I cannot figure this out....Old Dlink router ran like a champ...new Linksys keeps dropping the same client computer. I dont get it....Maybe I should go back to stock firmware?
  11. nanana1

    nanana1 Network Guru Member

    Had this problem before.......

    Use NetStumbler and see what channels your neighbours are using, then choose a channel that is not being used will solve your random dsconnect problem.

    Try this !.......took a long time for me to figure this out.
  12. pharma

    pharma Network Guru Member

    If you're using Tofu 12 you can also use site survey to determine the channels your neighbors are using.

  13. cavenger

    cavenger Network Guru Member


    Unfortunately, I have tried several channels that are not being used near me and all of them are having the same problem. SOOO frustrating.

  14. pharma

    pharma Network Guru Member

    Disconnect your phone and see how long it takes for you to loose a connection. If you don't loose it than the problem is your phone.
  15. hoever

    hoever Network Guru Member

    I had the same problem, many disconnects. My router is the WRT54G and the laptop used the WPC54g. The router has firmware Tofu 12. In the laptop i installed the latest driver for the WPC54g and i have no disconnects anymore. The driver in the laptop was the same versie number as the latstest on the Linksys site but this one was from november and the one i have was from feruari. But now NO disconnects. :cheering:
  16. cavenger

    cavenger Network Guru Member

    Finally got an indication of something from my event viewer.

    I just wasnt thinking software. The weirdest thing about this is I had no problem with my old Dlink. Anyone know what the error means below. I see this everytime I experience the problem...

    Event Type: Warning
    Event Source: Dhcp
    Event Category: None
    Event ID: 1003
    Date: 1/11/2006
    Time: 7:01:29 PM
    User: N/A
    Computer: CPQCNU3430P30
    Your computer was not able to renew its address from the network (from the DHCP Server) for the Network Card with network address 00121736098D. The following error occurred:
    The semaphore timeout period has expired. . Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.

    For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
    0000: 79 00 00 00 y...
  17. cavenger

    cavenger Network Guru Member


    ARGH! ARGH! ARGH!! ARGH!! I dont get it... old Dlink router..never had a problem. Now.. switched to this linksys....random disconnects...I dont get it! Both 56g...Gosh...should I take it back? This is my second linksys...maybe I should switch back to dlink. I Am about fed up...
  18. d00mzday

    d00mzday Network Guru Member

    I use to have lots of disconnects aswell so I thought i would share my tips. First if using WPA security unhide the ssid (set to broadcast ssid) and secure using a strong wpa aes/tkip key (hiding the ssid name when using WPA seemed to cause alot of grief and really only provides a false sence of security with sniffing programs like kismet client which is able to sniff active and passive networks). Change your ssid name to something unique from the default linksys name. Next goto Menu/Submenu Wireless/Wireless Security and set the Group Renewal Key from the default 3600 to 600. Last but not least goto Menu/Submenu Wireless/ Advanced Wireless Settings and look for a setting called Beacon Interval and change that from the default 100 to 50. Doing those small things cleared connection right up for me. I would still get the odd disconnect every odd so many days, so I started tweaking the Beacon Interval and found 47 to be my lucky #. Then after playing around with my channels my wireless has been pretty much solid as a rock. (note: you might wanna try this near the router at first to make sure your not having a distance/noise issues.)
  19. makumaku

    makumaku Network Guru Member

    same probs here

    i have a very mixed network, 1 PC (xp x64), a PowerBook G4 (10.4.4), and a Debian 3.1 box. All on wireless. Only the Windows box would disconnect. I am still having the issue, but it seemed to get a little better when I installed DD-WRT v23. but alas, it disconnected on me last night after about 2 hours of a solid connection. if I go into the status of the wireless connection, the SSID is blinking on and off, and the speed fluctuates from 54 to 24 them back to 54. i cant send or receive any data from the machine until i disable then reenable the connection.

    i have no cordless phones, and all of the pc's are within 15ft of the router (and no i wont hard wire them, cables are ugly :))

    i did a site survey and found that channel 1-5, 8 and 10 are unused. all channels still give me disconnections.

    i am convinced that this is a WPA renegotiation issue, because before i installed DD-WRT, the disconnects would happen every hour (the time WPA renegotiates by default. i am going to disable WPA and just use the MAC filter and see how that works.

    any other recommendations very appreciated.
  20. cavenger

    cavenger Network Guru Member

    First off...I really appreciate your response. That is what these forums are all about.

    Secondly, unfortunately, I have tried all of these possible solutions to no avail. One thing I think I need to point out is we are talking about a laptop with a wired connection when I am docked and wireless is sitting there connected at the same time. So when I disconnect I want to use the wireless. The thing is, it still drops even when it is not docked, so I dont think the two connections at once has anything to do with this.

    Here is the event log again in order of how this happens:

    1. Interface Wireless Network Connection 9 is unreachable because it is not currently connected to the network. (I assume this is because the router dropped it)

    2. The system detected that network adapter Wireless-G...v.2.0 - Packet Scheduler Miniport was disconnected from the network, and the adapter's network configuration has been released. If the network adapter was not disconnected, this may indicate that it has malfunctioned. Please contact your vendor for updated drivers.

    3. Interface Wireless Network Connection 9 is now reachable.

    4. Your computer was not able to renew its address from the network (from the DHCP Server) for the Network Card with network address 00121736098D. The following error occurred:
    The semaphore timeout period has expired. . Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.

    Number 4 doesnt seem to be consistent until after a while. Note that I have already updated my drivers more than once and even switched to an alternate dlink driver that works with the same chipset of this adapter. I also made sure the power mode on the adapter was set to continuous access mode.

    I don't want to set static ip on this adapter because I want to take it from this wireless network to others without having to reset my ip settings.

    I am about to pull my hair out though.
  21. makumaku

    makumaku Network Guru Member

    beacon interval seems to improve it. i dropped mine from 100 to 75 and it seems to have gotten better. havent dropped a connection yet....
  22. cavenger

    cavenger Network Guru Member


    I have taken back my WRT54GS and gone to the WRT54GX2. I am hoping it was just a bad box. I am also staying with stock firmware for now. I am looking for stability right now.
  23. Devileyezz

    Devileyezz LI Guru Member

    cavenger, how's it going now?

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