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My wireless card light come on and works fine using windows. When I switch to ubuntu operating system the wireless light does not come on. What do I need to type in to turn it on using ubuntu 12.04? Thank you

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Can you please attach more information? Different cards have different drivers. Post the result of lsusb and lspci. One of the commands will tell us the model. –  McNisse Jan 12 '13 at 20:22
Does your system have a keyboard combination to turn it on/off? (dell uses Fn+F2 for instance, Acer Fn+F3). It might be set to off after a boot :) Could you also include brand and modelnumber of your system? –  Rinzwind Jan 12 '13 at 20:22
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