cay, since your non-working keys differ from Edgardo's, you probably have a different bug. Edgardo's bug is (probably) one that was fixed some time ago (and was actually a hotkey issue rather than an xkeyboard-config issue).
Edgardo, if you're still seeing this issue for some reason, please feel free to reopen, and attach your Xorg.0.log
cay, since your non-working keys differ from Edgardo's, you probably have a different bug. Edgardo's bug is (probably) one that was fixed some time ago (and was actually a hotkey issue rather than an xkeyboard-config issue).
Edgardo, if you're still seeing this issue for some reason, please feel free to reopen, and attach your Xorg.0.log