Comment 46 for bug 1035431

Does not work for me.
Running 14.10 with utopic-proposed enabled; an update installed gnome-bluetooth 3.8.2.1-0ubuntu9 amd64

Several errors were logged. It looks like an error occurs when starting discovery, before even attempting to pair with a device. And after attempting to pair, the usual "Invalid Parameters" error occurs AND a dbus error about a rejected message:

1. Clicked "Set up new device" in the bt applet
syslog: bluetoothd[637]: Discovery session 0x7f9eb2d982c0 with :1.70 activated
syslog: bluetoothd[637]: Unknown command complete for opcode 37

3. Selected a device in the list and clicked Next (the device was my Android 4.4 cellphone, which was set to be visible)
syslog: bluetoothd[637]: Stopping discovery
syslog: bluetoothd[637]: hci0: Cancel Pair Device (0x001a) failed: Invalid Parameters (0x0d)

auth.log: dbus[601]: [system] Rejected send message, 3 matched rules; type="method_return", sender=":1.73" (uid=2000 pid=5662 comm="bluetooth-wizard ") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.1" (uid=0 pid=637 comm="/usr/sbin/bluetoothd ")

I'm using a usb bluetooth dongle. I've _never_ been able to use it with Ubuntu, so I suppose it could be a hardware problem. Even if that is so, the above errors looks like bugs to me, not legitimate diagnostics.