I'm using Ubuntu 9.4 and keyboard BTC 8190A which has a "sleep" button.
Hibernate and suspend work great when I use them trough username>Suspend or username>Hibernate, but when I press the "sleep" button, comp looks like going into suspend but I can't wake it up.

Is there a way to change a mapping of that key or to remove default mapping?

I tried generic 105key driver and few other BTC drivers, ubuntu has no driver for this specific keyboard.