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My Wi-fi was working perfectly fine in previous versions of Ubuntu.

After I installed 13.04 i find these problems:

  1. Can detect home Wi-fi signal but can't connect. Keeps asking for password then "disconnects" over and over again.

  2. All other computers, tablets, and smartphones at home can connect to the wi-fi without any trouble at all.

Network card : Intel Corporation Centrino Wireless-N 2230

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Please find the link you may refer to fix this issue. askubuntu.com/a/293154/44518 –  karan Jun 13 '13 at 6:51
    
Open the terminal, run sudo tail -f /var/log/syslog. Then try to connect to a wireless network. After the connection fails, post the output. –  Damn Terminal Jun 13 '13 at 11:56
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