dmesg | grep thinkpad
[  701.927102] thinkpad_acpi: deprecated sysfs attribute: access by process with PID 2337
[  701.927110] thinkpad_acpi: WARNING: sysfs attribute bluetooth_enable is deprecated and will be removed. Please switch to generic rfkill before year 2010
[ 1555.095572] thinkpad_acpi: setting the hotkey mask to 0x0000ffff is likely not the best way to go about it
[ 1555.095576] thinkpad_acpi: please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation