Cisco 1100 AP and IBM ThinkPad T40 problem

Discussion in 'Wireless Networking' started by John Strow, Nov 9, 2004.

  1. John Strow

    John Strow Guest

    This problem only happens with IBM wireless cards on T40p's, usually happens
    in places where there more than one AP available, and it is bouncing between
    them. Will produce bad_pool_caller error blue screen, which usually points
    to bad driver. The Cisco or Intel cards have never had the problem. The
    firmware and software have all been updated on the AP's. Seems to come and
    go. Doesn't matter what IBM driver, T40 bios version, Windows level,
    anything we can put a finger on. The IBM engineers didn't know either; they
    wanted to have it 100% re-produce able before they would look at it. We
    thought it was the XP zero configuration wireless service running, stopping
    it didn't seem to help.

    Any one experiencing similar problem?


    John Strow, Nov 9, 2004
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  2. Hi John,

    The Wireless Zero Config service should never cause a blue screen. WZC
    is a user mode service (as opposed to a kernel mode process or a driver).
    Here is a web page that has more information on what causes the
    bad_pool_caller blue screen:

    The latest version of the driver for IBM T40/P is Here is a
    link to their driver:

    If you are updated to the latest version of the driver and are still
    having problems, you might want to ask IBM if they would accept a memory
    dump when a blue screen happens. They should be able to use the memory dump
    to figure out what is causing the blue screen. Follow the instructions on
    the following web page to turn on complete memory dumps:

    Chris Gual [MSFT]
    Chris Gual [MSFT], Nov 11, 2004
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