[arch-general] neo - german keyboard layout

hi list, i played around with neo2, an alternative kbd layout optimized for german. in my kde environment. the main concept of neo is using meta keys to shift between layers. for me, the meta4 key is not working on either side. i found some suggestions to solve this problem, but nothing worked so far. anybody out there knowing, how to fix this? and how can i enable neo in initramfs, for input of my encryption pw? thanks georg