Definitely there must be something wrong: when I run the driver all I get are the four dots flashing and no digits in the nixie tubes. Keys "1" and "2" do nothing. (SDLMESS current, Gentoo x86_64)

BTW could you check this: start any driver, enter "Input (this machine)" and redefine any key, then press DEL to reset the definition to default - Segfault!