I switched my Esc and Capslock key by following this wiki page: https://wiki.manjaro.org/index.php?title=Keyboard_Layout#Customize_keyboard_layout
In the "mapping file" i swapped this:
keycode 9 = Escape NoSymbol Escape (...) keycode 66 = Caps_Lock NoSymbol Caps_Lock
keycode 9 = Caps_Lock NoSymbol Caps_Lock (...) keycode 66 = Escape NoSymbol Escape
It did kind of work, but not really: The Esc is now Capslock but the Capslock key dose now both: Esc and activate Capslock at the same time (I hope its not a Hardware problem of the keyboard?).
Has somebody any Idea?