My MacBook Pro (5,3) works almost completely OOTB (with restricted video and WiFi drivers), but I am experiencing some keyboard weirdness. Specifically to get either (` and ~) or (´ and ¨) I have to press the key twice. Only these two keys behave this way - every other key mapping works. Keyboard settings are: Model: Apple Laptop (due to #538474) Layout: United Kingdom Macintosh (International)