Bluetooth not working!

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http://askubuntu.com – I am running KDE 4.10.5 on Ubuntu 13.04 on an ASUS X53U. The computer can boot in Windows 7 (from Grub). In Windows, I can turn bluetooth on and off and use it. In Ubuntu, however, I can there is no bluetooth - it shows no adapters found. What do I need to do to get the bluetooth working? (HowTos)