Comment 10 for bug 671923

I found the problem. Your code expects one byte per character, but XLookupString returns an utf-8 character which can have up to 4 bytes. I patched lock.c to support up to 4 bytes, a diff is attached. Of course it's just a dirty hack, detection of non-printable characters is partially disabled, stars are shown for each byte instead of each entered letter, backspace works bytewise instead of character-wise and it may have further shortcomings. But it works for me with umlaut ö in my password.