NOTE: There is a newer 2025 model that is a light update to the chip set (Intel Ultra Core 9 185H => 285H), but otherwise looks identical. I have the older 185H model. It seems the base model number UX8406M stays the same across these generations.
When I attach the removable keyboard, which covers the bottom screen entirely, the bottom screen remains on. The buttons on the keyboard to change screen brightness do nothing. The button on the keyboard that is supposed to turn off the second screen also does nothing.
There is a kernel mod project which addresses these issues: GitHub - Plippo/asus-wmi-screenpad: Variation of the asus-wmi kernel module with screenpad brightness support
I am running aurora-dx-hwe:latest.
I expected it to include kernel mods specific to ASUS laptops, but I don’t know how to check if this mod is included.