Comment 58 for bug 215035

Oops, sorry, should have looked more closely. Jonas, I don't think that the current udev rule even matches for you, since in your udev dump I don't see "Logitech USB Multimedia Keyboard". I suppose for you the rule needs to look like

  ENV{ID_VENDOR}=="Logitech*", ATTRS{name}=="USB Receiver", RUN+="keymap $name logitech-wave-cordless"

and you need to create a new /lib/udev/keymaps/logitech-wave-cordless file which looks structurally like Dominik's file, but using the scan codes you determined in http://launchpadlibrarian.net/33562506/Logitech.Wave-keymap.test.txt . Please note that you only need to include the keys which are wrong (like wordprocessor), and not the ones which are already correct.

Could you try this?