I have a very specific problem. I'm using a Thinkpad X13 Yoga (Gen 3) with OpenSUSE Tumbleweed and an external Bluetooth keyboard of type ThinkPad TrackPoint Keyboard II with German layout. (I would have preferred USB, but apparently they don't sell them anymore.) Everything works as expected except that I can't use the function keys. If I for example press F2 on the external keyboard it is interpreted as a volume control. This is usually changed by the FnLock feature, but that's exactly what is not working. Pressing the ESC/FnLock key while holding Fn does nothing, in particular, the little FnLock LED isn't switched on. And pressing a function key like F2 together with Fn also doesn't affect its behavior, it is still interpreted as a volume control. Any ideas?
FWIW, I'm using KDE and I have this problem with Wayland as well as with X. The internal keyboard of the laptop works fine, though.