>you can run ps -eaf |grep vnc to see whcih all ports being reserved
Isn't there any easier way? Users are not expert, so do not expect to use ps command and see which vnc port is free...
If I don't use vnc, the qemu will bring up the screen. So, the question is what is the benefit of using vnc? Bu using vnc, I have to open another terminal and connect to the guest