https://www.reddit.com/r/archlinux/comments/13cr6mj/how_to_setup_bluetooth_service_on_arch_linux/Je kunt in bluetoothctl omgeving proberen en kijken naar een eventuele error.
Try with bluetoothctl instead of blueman for now - stop all bluetooth related services, except for bluetooth.service. Now:
Run bluetoothctl in a terminal. You shouldn't need root.
Probably the correct device is selected by default. Type power on.
Type agent on. Probably it will tell you it is already registered.
Now scan for devices, type scan on. Hopefully, some devices near to you should pop up. They will be associated with mac addresses that look something like 00:B6:E9:02:E5:12; if you're lucky it'll show you the device name after the mac address so you can identify it, if you're unlucky it might just reprint the mac address twice, and you'll have to pair with it before it prints its info properly or you can get good info with info <mac-address> (obviously this isn't so good in public areas, I'm not sure how to get this info with bluetoothctl when it doesn't show initially).
Pick the mac address you want to pair with, and type pair <mac-address>. You can just type the first two numbers and tab-complete.
Pairing should have been successful. If it needed a pin, it should have prompted. If it didn't, you may need to run trust <mac-address>.
Now run connect <mac-address>. Hopefully, things should work fine now, remember to check pulseaudio settings with pulsemixer or pavucontrol or similar to make sure your buds are unmuted, that audio is going to the right stream, and that the audio card for that stream is set properly (ie. if it's getting the wrong kind of input it might just play silence.)
