I have an Intel NUC with both an internal WiFi/Bluetooth adapter and an external Bluetooth adapter. With the internal adapter, I can turn on a Bluetooth headset and it auto-connects. With the external adapter (configred as described here: http://ubuntuforums.org/showthread.php?t=2276242), it does not auto-connect, though I can connect it manually by going to System Preferences > Bluetooth, select the headset, and click Connection > On.
I found http://metricrat.co.uk/xubuntu-bluet...n-audioheadset which notes /etc/bluetooth/audio.conf has an option AutoConnect which is unset by default. I changed it to AutoConnect=true. What I observe now is when I turn on the headset, the setting goes from Connection > Off to Connection > On and then after a second or so back to Connection > Off. If I manually move it to Connection > On, it stays connected.
(Maybe it was flip-flopping before and I just did not have system preferences open so I did not see it.)
(The page https://help.ubuntu.com/community/BluetoothSetup mentions /etc/default/bluetooth but I do not see one. I'm guessing the page is old and should be the same as above.)
The headset is the only Bluetooth device I am using currently, so I do not know if other Bluetooth devices have the same behavior.
Any suggestions how to debug this? Manual works, but is a hassle; and, based on the internal adapter's behavior, it should be possible to connect automatically.
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