I have a dual boot system with Ubuntu 20.04 & Windows 10.
My Bluetooth Steenssen speakers work on Windows automatically and used to work on Ubuntu. As soon as I reboot to Ubuntu the solid blue light flashes. I have tried all Ubuntu options listed that have appeared under many searches to no avail. When I try to Load Blueman it states that it is loaded by default and Pulseaudio is also installed.
Bluetooth is on and in Bluetooth manager the speakers show and give levels of signal strength. They do not have the Bluetooth symbol next to them. In Settings, Bluetooth, they appear but say disconnected, I can click on them and connect them, but checking sound settings they never appear. On next inspection they are disconnected again.
One of the many attempts I found, started with sudo vim
(I copied and pasted, so no typo) and it replied "command not found", just in case that is useful.