There's dozens of thread about USB and hibernation, the associated problems and possible solutions.
I avoid this problem by using a PS2 keyboard.
Hello, I am currently rebuilding my pc after if was taken from me in an unfortunate event and I was putting in the finishing touches yesterday and noticed that my new zippy lighted keyboard was working fine after I plugged it in in the usb hub but after coming off hibernation, the keyboard was still lit but was not responding. so what i have to do is unplug and replug it back to get it to work. does anybody have a solution to this or is it just my luck, thanks