aka_pseudonym wrote:So I'm sure it's the card - it doesn't drop the connection to the mouse (maybe stores it?) when the machine is shut down. Hence when it's re-started in another OS the card gives out some sort of "busy" signal telling whatever the OS is that it's already connected even though it isn't.
So if anyone ever rewrites the bluetooth drivers can the first line be some kind of universal zap to every possible bluetooth card ever made. Maybe, just maybe, Bastien will then retire.
(Addenda: I've got a little Bluetooth speaker too - just tried with that - exactly the same scenario.)
I think you are on to it. I got a new mouse to replace my old one that died and worked until I used it in W10 via dual boot. Removing from windows and it works again in Mint.
Curiously using Blueman when it was not working, if I attempted to use the mouse Blueman would show data being transferred between the mouse and computer and the mouse showing up on the panel but would not connect.
I had this problem intermittently with my last mouse and would go months at a time working happily with Windows and Linux and then suddenly have a hissy fit and require deleting from both and reinstall.
As you say. Someone in the know needs to add a zap to the system to clear things on boot.