Disabling Bluetooth on your Thinkpad permanently

Persistently disabling Bluetooth across reboots is not trivial on some Ubuntus (I'm using 16.04 LTS).

Instead of configuring systemd or editing config files, you may also disable Bluetooth in your BIOS:

• Interrupt start-up with a hotkey (ENTER on my X260)
• Enter BIOS configuration utility
• Go to Security
• Go to I/O Port Access
• Set Bluetooth to Disabled
• Save changes and reboot