Driver

casper-wmi exposes Excalibur controls through Linux interfaces. It is the kernel-side piece for fan telemetry, keyboard LEDs, GPU/display mode, and platform profiles.

Kernel module

casper-wmi is an out-of-tree driver for Casper Excalibur WMI controls.

lsmod | grep casper_wmi
ls /sys/module/casper_wmi

Linux subsystems

Controls are exposed through sysfs, LEDs, hwmon, and platform profile interfaces.

cat /sys/firmware/acpi/platform_profile
ls /sys/class/hwmon

Development reload

Use the repo reload script when testing local driver changes.

nix develop
nu ./scripts/reload.nu