Comment 1 for bug 281993

I can confirm this too, on a 5000 laser keyboard.
Worked fine in hardy, now I have standard keys working (and mapped on event1) and just some of multimedia keys responding.
Multimedia keys are mapped on event2 and those from 1 to 5 (not the standard or keypad digits, but the extra button you can freely remap) are detected by xev or any other keycode scanner.
The "star", media buttons, volume buttons, and all the extra buttons on the left side of the kayboard do NOT generate any keycode.
I suspect something wrong with udev or the kernel.