Bluetooth manager will not open; error message saying BlueZ connection failed; either because no bluetooth adapter detected or bluetooth daemon not started. I searched the help forum and tried an uninstall/reboot/reinstall of blueman and same problem occurs. Thanks! Yesterday an error message popped up to send to developers of a blueman tray crash. I just installed so do not know if bluetooth had been working before that error message.
Have you checked to see if Bluetooth is disabled in BIOS?