Hi everyone ! For my first post here, I offer you some haunted Thinkpad stuff.
While visiting a friend recently, I came by a very strange issue affecting the backlight of his T440s' screen :
When the computer is shutting down, as soon as the display turns off, the backlight will flicker with almost the same behavior as a good old disk activity LED.
When the computer is OFF, some off the LEDs from the backlight strip will stay ON (and by off I mean whatever state UEFI computers enter nowadays when clicking shut down in the Windows start menu) and those LEDs are
