I shot a UNIX keyboard on ebay. Of course, it “just works” when you plug it in. However, I want it to work properly, that is, the special keys on the left should show their labels when assigning them e.g....

The compose (Multi_key) support in SCIM for non-GTK applications depends on the input method "Other Languages/English/European languages" being selected. Even if you do not use this input "method", it will still affect the compose functionality when the panel is disabled....