Hello,

I just got a brand new Excalibur, but I cannot get many of the Fn keys to work.

The following does work:
- Fn-F1 does activate sleep correctly
- Fn-F4 inputs "p"
- Fn-F5 toggles  touchpad
- Fn-F9 toggles keyboard backlight
- Fn-F10/11/12 switches performance mode

However Fn-F2/F3 (screen backlight) and Fn-F6/F7/F8 (volume) do not do anything. I cannot find a way to Fn-Lock either (nothing is marked on the keyboard, I tried Fn-Esc but that does not seem to change anything) 

I tried monitoring keyboard events using wev, but nothing is shown when pressing those keys. I couldn't find any related BIOS settings (bios is version KPT-W042-FP8-OSLI-0.13).

I'm on Arch, kernel version 6.18.6, and I installed slimbook-meta-excalibur.

Any help is greatly appreciated :)

Nicolas