如果是mcs的方式创建的虚拟机，鼠标定位不准的问题通过下面的方法解决

•Get the uuid of your VM (ensure that xentools is installed)

•Shutdown the VM (otherwise, unexpected problems may occur)

•Open the console of sever and enter: xe vm-param-set uuid=<VM uuid> platform:usb=true platform:usb_tablet=true

•Start the VM: xe vm-start uuid=xxx