You Have to set it to "keyboard". I got the F1 key working by editing the /usr/share/X11/xkb/symbols/nokia_vndr/rx-51 -file, but I'm pretty sure there's a better way to do it. You can see the hatari configuration file I'm currently using by clicking here. P.S: the keyboard on my N900 does not have separate up/down arrow keys (Scandinavian layout), and I have to temporarily change the layout to English when I want to use the emulator.