Can you recommend a Bluetooth dongle that support s version 5.3, not too terribly expensive and available in Europe? Preferably works out of the box on Ubuntu LTS, but compiling my own kernel is also acceptable.
For context my last attempt ended with one that only works with Windows 10, when no other Bluetooth receiver is connected. Cherry on top it needs troubleshooting wizard after each reboot.
I don’t know what’s available in Europe, but I’ve used Pluggable and StarTech dongles. They both work fine with Ubuntu without configuration. One of them is a Class 1 device, the other one Class 2. The Class 1 receiver has much better range and better connection stability. So the only useful thing I have to say is - look for a Class 1 receiver if you want the best range possible.