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Thread: Dell precision M4700: Wireless failed after ubuntu 12.04 updating

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    Join Date
    Feb 2013

    Angry Dell precision M4700: Wireless failed after ubuntu 12.04 updating

    Hello everybody,

    hope somebody can help.
    I am working on a Dell precision M4700 laptop with Ubuntu 12.04 and KDE desktop.
    After a "suggested" system updating, my wireless connection stops working. KNetWorkManager sees the wireless and tries to connect to it but, after a while, a small windows pops up and asks for a password. If I introduce the wireless one I have it tries again but nothing happens. That window appears again and again asking for a password.
    Such windows has a key as a symbol on the top left corner, the same key appears over the KNetWorkManager symbol which is on the bottom panel. The window has the title "Secretas de [wireless name] - Service for KDE-" (in Spanish sorry ).

    I guess some security measurement has been activated after the updating but I do not know how to deactivate it.

    I am sure the password is correct and the router is working fine, indeed, I am using another laptop to publish this thread using the same wireless connection.

    I also post some useful information:

    kernel: 3.2.0-37-generic
    desktop KDE
    ubuntu 12.04.2 LTS


    lo: no wireless extension
    eth1: IEEE 802.11abg ESSID off/any
    Mode: managed access point: not-associated
    Retry long limit:7 RTS thr off Fragment thr off
    power management: off
    eth0: no wireless extension

    Thanks for your support!
    Last edited by rbaena; February 15th, 2013 at 10:33 AM.

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