ASUS laptop R209ha

I am trying to install Leap15 on an Assus laptop via USB stick.
As soon as I reach the licence agreement I can not use the keyboard or move with the touchpad.
In former days you had the possibility to install in Text mode <F3>
I also tried to add video=ask to the boot loader. That did not help.
I am able to install Ubuntu 18 on the machine.
Unfortunatly no sound
I am used to OpenSUSE (specially Yast)
Does anybody know a work around?