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Wireless connection randomly has problems

Discussion in 'Networking' started by dabhome, Nov 13, 2012.

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  1. dabhome

    dabhome Thread Starter

    Joined:
    Nov 13, 2012
    Messages:
    2
    My wireless connection randomly drops, or has no Internet connection, or says it has connection and Internet but no web pages load. Usually, what happens is it says I have no Internet connection. I have to disconnect and reconnect to get the Internet back. My ethernet connected computer never loses connection.

    I am running Windows 7 with a Realtek wireless card. I have updated the driver to the latest. The wireless router is a D-Link 615 e1 using DD-WRT. The router is hooked up to a Brighthouse Arris TM402G/110 modem for internet access (note: this is my second modem. I had the same problem with another modem. Unfortunately, I don't remember the name.)

    When the router is connected to a U-Verse 2Wire 3800HGV modem/wireless router (with the wireless turned off) I have no Internet disconnections. Everything else is the same (I just move the Ethernet cable between the two modems). Of course, one is just a modem and the other is a NAT router/modem.

    I noticed that the wireless connection has a weaker signal when connected to the Brighthouse modem then when connected to the U-Verse modem. I therefore tried to up the TX signal strength on the router. This improved the situation (and the signal strength) but I still get disconnects. I also tried setting the MSS to 1492.

    I know I am not posting enough to solve the problem. But, rather than post everything I would rather provide the information needed. I am currently on the wrong computer, so I didn't bother posting the information from TSG SysInfo. When I can get to the wireless computer I will post that information plus any other information requested. Your help will be appreciated.

    Thanks,
    David
     
  2. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,294
    First Name:
    Wayne
    can we see an xirrus screen shot
    ------------------------------------------------------------------------
    Run Xirrus Wi-Fi Inspector
    Download and install

    If you cannot access the internet with this PC, then you will need to copy the program across to the faulty PC
    Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and install the program.
    You will now need to take a screen shot and copy that back to the working PC and attach the screen shot in a reply on the forum here.

    http://www.xirrus.com/Products/Wi-Fi-Inspector.aspx
    Direct link to the program is here http://info.xirrus.com/Wi-FiInspectorConfirmation.html

    {If the above link does not work heres another link http://www.pcworld.com/downloads/file_download/fid,77196-order,4/download.html}

    Then run and install the program - on a wireless enabled PC/Laptop
    if you get an error - You need will need to have NET Framework installed for the WiFi Inspector to function.
    On windows 8 - (i do not have windows 8) but, it would appear that, When you first try to run, you may get a message that .net framework is needed, and included in that message is a link to download/install.

    Run the program

    A user guide is available here http://www.xirrus.com/cdn/pdf/Xirrus-Wi-Fi-inspectorguide-1-2-1-RevB-6.aspx

    post a screen shot of the program running.
    if there are a lot of networks showing can you click on "networks" top lefthand area - so we can see all the network information.

    post which SSID name is yours, its located in the list, under network "Adapter Name" (1st column)

    To post a screen shot of the active window.
    1) hold the Alt key and press the PrtScn key. Open the Windows PAINT application (Start> All Programs> Accessories> Paint) and Paste the screen shot. You can then use PAINT to trim to suit, and save it as a JPG format file.
    OR
    2) if you are using Vista/Windows 7 you can use the "snipping tool" which is found in Start> All programs> Accessories> Snipping Tool

    To upload the screen shot to the forum, open the full reply window ("Go Advanced" button) and use the Manage Attachments button to upload it here.
    Full details are available here http://library.techguy.org/wiki/TSG_Posting_a_Screenshot

    Note:
    For a reliable (or robust as the Xirrus user guide says) wireless connection you need a signal of about -70 dBm or better. "A desirable signal level for a robust Wi-Fi connection will be green".
    note: the signal level is a negative number, so for example -88 is worst and -40 is better

    If you are using the Mac OS then use http://www.istumbler.net/ or
    if you want to optimise base station position and signal strength / dead spots use
    http://www.chimoosoft.com/products/apgrapher/ which has a graph function to monitor signal
    ------------------------------------------------------------------------
     
  3. dabhome

    dabhome Thread Starter

    Joined:
    Nov 13, 2012
    Messages:
    2
    I appear to have solved the problem. Although, I see that my signal level is only -80 and therefore not good enough for a reliable connection.

    I updated the driver on my Trendnet card and I upped the TX value on the wireless router. This appears to have solved the problem.

    Thanks for the reply.

    David
     
  4. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,294
    First Name:
    Wayne
    your welcome (y) thanks for letting us know
    You can mark your own threads solved using the [​IMG] button at the top of the page of the thread in the upper left corner. :)
     
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