I'm not sure which release fixed this, but several keys have come and gone, but they are all working now.
** Changed in: xkeyboard-config (Ubuntu) Status: Confirmed => Fix Released -- Japanese Logitech Internet Navigator SE layout has undefined key https://launchpad.net/bugs/36650 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs