Seems this bug is happened by problem of xkeyboard-config but I'm not sure. Altough xev show right Alt key is "Hangul", Unity(compiz?) still work with it. But it works correctly in other keyboard layout that doesn't contain right Alt key.
Seems this bug is happened by problem of xkeyboard-config but I'm not sure.
Altough xev show right Alt key is "Hangul", Unity(compiz?) still work with it.
But it works correctly in other keyboard layout that doesn't contain right Alt key.