Bluetooth: How to activate the bluetooth function on my RPi if there's "no default controller available"

[orbanm]

I'm trying to run Ubuntu server 18.04 on a raspberry pi 3 model b but whenever I try to use any of the Bluetooth features of the device, it acts like there are no bluetooth capabilities. Running the

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rfkill list

command only brings up settings for the Wireless LAN, not hci0, running the

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hciconfig

command brings up nothing at all, and running the

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bluetoothctl

command works but if I try to scan, search for devices, advertise, etc. I just get the message: "No default controller available. I've already tried setting

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AutoEnable=true

in the

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etc/bluetooth/main.conf

but this has also done nothing. Here's the output for

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dmesg | grep Blue

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[14.116780] Bluetooth: Core ver 2.22
[14.132786] Bluetooth: HCI device and connection manager initialized
[14.142914] Bluetooth: HCI socket layer initialized
[14.151799] Bluetooth: L2CAP socket layer initialized
[14.160984] Bluetooth: SCO socket layer initialized