Fn keys don't work on i3wm but work on Xfce

[Grigory Fateyev <gfborn@gmail.com>]

Hello, Debian Users!

I recently installed Debian Trixie on my new Lenovo ThinkPad T16 Gen3
(Intel Core i7-155H, Meteor Lake-P). While everything works smoothly
under Xfce, my Fn keys (brightness, volume, etc.) stopped functioning
after switching to i3wm.

Could you advise on how to export the relevant Xfce configuration for
these keys and apply it in i3wm? Any troubleshooting steps or
alternative solutions would also be greatly appreciated.

Thanks in advance for your help!
-- 
Best regards,
Grigory