Keyboard disconfigured for notebook after plugged usb keyboard

I've being using Ubuntu in my notebook for 2 years already. Recently, I plugged my desktop's keyboard on it. After I removed the keyboard, the notebook's keyboar got messed up, for example, letter 'k' gives number 2, letter 'j' gives number 1 and so on. I can make it stop after changing the language for the keyboard, but now if I press CapsLock the problem happens again, like my CapsLock is mapped to NumLock. I've tried restarting the notebook, but the problem is still happening.

Anyone faced the same problem? Any suggestions?

Thank you.