Workaround: add the following line to /etc/modprobe.d/thinkpad_acpi.modprobe
options thinkpad_acpi experimental=1 hotkey=enable,0xffff8f bluetooth=disable
Now Bluetooth will be disabled by default on boot but can be enabled by hitting [Fn]+[F5] Tested to work on my T42.
Workaround: add the following line to /etc/modprobe. d/thinkpad_ acpi.modprobe
options thinkpad_acpi experimental=1 hotkey= enable, 0xffff8f bluetooth=disable
Now Bluetooth will be disabled by default on boot but can be enabled by hitting [Fn]+[F5]
Tested to work on my T42.