Often with a Linux kernel update, or even after a first install of Linux in place of Windows, Bluetooth stops working and the advice is usually to just power off your computer, wait a bit, and then turn it on again. Bluetooth then miraculously works again.
I mean the issue could also come from other things (not starting the right kernel module etc…), but very often it’s just this simple trick that makes it work again.
So what is changing in the Bluetooth device when you do this power off/wait a bit/power on trick?
I once had rsync going and didn’t want to stop it. my xorg somehow died, managed to restart that from ssh keeping the rsync running. had to use something to move the rsyncs to a screen first. kinda cool how you can almost always just restart parts of Linux instead of the whole thing