The Issue
After a fresh installation of Arch Linux (using archinstall), my bluetooth was not working. The GUI toggle would toggle on and directly off again.
The Culprit
Read: https://wiki.archlinux.org/title/bluetooth
Run: pacman -Qs bluetooth
The package bluez-utils was missing from my system.
The Solution
Install the missing package: pacman -Syu bluez-utils
Manual tryout: sudo systemctl start bluetooth.service
Enable the service to auto-start it on startup: sudo systemctl enable bluetooth.service
