On Lenovo LGMV series, the handles communication between the Fn key and Windows. A missing or outdated ACPI driver kills the Fn Lock.
When you plug in a Logitech keyboard that has dedicated lock key indicators (LEDs for Caps/Num Lock), Windows may identify the internal microcontroller as "LGMV." The driver ensures that the OS correctly reads the lock key status and toggles the physical LEDs on the keyboard. lgmv lock key driver upd
Would you like this adapted for a specific platform (Windows blog, Linux forum post, or tweet-sized announcement)? On Lenovo LGMV series, the handles communication between
Avoid third-party βdriver updaterβ tools β they often bundle malware or incorrect drivers. On Lenovo LGMV series