[solved] Fn button problem

[der-schutzhund]

Hello together,

have a strange effect on a notebook Fuijtsu Siemens LifeBook!
It looks as if the Fn button is activated and deactivated by pressing is. Exactly reversed, how it should be normal. I can only write this post because I hold the Fn button constantly pressed!

Do you have a solution for this?
I use lucid / lazy.

Many greetings

Wolfgang