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Dell Inspiron 15R 5520 Wireless Device Not Detected

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linux-howto

http://askubuntu.com – I bought dell inspiron 5520 15R last week and i am a newbie in unbuntu platform. i installed win7 as well as ubuntu 12.04 (64BIT). But my wireless device is not detected in ubuntu while it is working fine in windows os. my wireless device is : dell wireless 1704 802.11B 2.4GHZ . is this the compatible problem with ubuntu. what would be the solution. do i need to isntall another version of ubutnu.. (HowTos)