SaX

I have a laptop and used Yast2 to configure an external USB mouse. However, the trackpad became inactive. When I now restart without USB mouse I am in trouble.

I wanted to activate the wheen of my USB mouse, but everytime I went to Yast2 > Hardware > Mouse the X server crashed and threw me into a text console. Also using SaX2 didn't work (there is a button under Input devices > Properties > Activate mouse wheel). Funnily the wheel usind to work in 9.1.