Problem: No working wheelmouse after upgrade (5-Button-Intellinet-Explorer) Solution: /etc/X11/xorg.conf Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "yes" Option "ZAxisMapping" "4 5" Option "Buttons" "5" EndSection