解决方案：
1、sudo gedit /etc/X11/xorg.conf
2、编辑xorg.conf
Section "InputDevice"
Identifier "Configured Mouse"
Driver "vmmouse"
Option "Protocol" "ImPS/2"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "yes"
EndSection
3、重启计算机