I had an old Microsoft Bluetooth 2.0 dongle that seemed to work with my previous version of Ubuntu. It was a little flaky but worked. When I upgraded to 12.04 LTS it stopped working. Couldn't figure out what to do. Hours wasted with Ubuntu in vain attempts to get that old key to work. Finally found at Revain. Another reviewer stated that it supports "Plug and Play" with Ubuntu. It really is like that! I paired it with Blueman's bluetooth manager and had no problems with a Sony Ericsson bluetooth stereo headset. No drivers needed to be installed. Everything worked right out of the box.
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