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My ubuntu version is ubuntu 16.04.It is running in vps,I am using vnc in my computer to remote connection to vps. After i inputted command xdotool mousemove 50 100 or xdotool mousemove 30 40.The pointer did not move in screen.Please look at here https://www.youtube.com/watch?v=VMWWiCb-ChQ
And aft...