Bluetooth not working on Raspberry Pi (Ubuntu 20.04)
I have installed Ubuntu 20.04 LTS successful on a Raspberry Pi 4.
However I cannot get the Bluetooth to work. In settings it says no Bluetooth found - plug in a dongle to use.
I have an identical Raspberry Pi 4 running Raspian and the Bluetooth works fine. When I run Bluetooth manager it just runs and closes.
I found an answer for this on the raspberry pi forum - very simple: Install the pi-bluetooth package:
sudo apt install pi-bluetooth
sudo reboot
I was able to get it working following the answer here but I found I needed to run the attach command twice:
$ sudo hciattach /dev/ttyAMA0 bcm43xx 921600 -
bcm43xx_init
Initialization timed out.
$ sudo hciattach /dev/ttyAMA0 bcm43xx 921600 -
bcm43xx_init
Set Controller UART speed to 921600 bit/s
Flash firmware /etc/firmware/brcm/BCM4345C0.hcd
Set Controller UART speed to 921600 bit/s
Device setup complete