sudo apt install blueman sudo add-apt-repository ppa:blaze/rtbth-dkms sudo apt-get update sudo apt-get install rtbth-dkms
Then add the following line to the file sudo vim /etc/modules
rtbth
After a reboot, you should see the bluetooth icon on the upper right corner of your screen.
You are now able to connect to Airpods pro from Devices.
It turns out that AirPods Pro can both server as headphone and microphone with Ubuntu Linux Laptop.