I have a laptop with 2 BT adapters, one internal (Broadcom BCM2045B; WIFI+BT adapter) and one external (CSR USB BT Dongle). I want to use only the latter because it supports Bluetooth 4.0, unlike the first one. On Ubuntu 14.04, how can I disable the first one permanently and make the system use the latter (I guess by setting the it to hci0 and the internal to not hci0)? I'll appreciate the help.
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1Possible duplicate of [How can a specify specific bluetooth adapter?](http://askubuntu.com/questions/594843/how-can-a-specify-specific-bluetooth-adapter) – Jeremy31 Feb 15 '16 at 11:14
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I'm not sure who's `hci0` at startup. How can I tell? – G. Ko Feb 18 '16 at 05:39
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Check `hciconfig -a` and look at manufacturer that will be listed – Jeremy31 Feb 18 '16 at 11:18
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Found the best way to do using this answer (unbinding the usb device): https://stackoverflow.com/a/23033318/3526940