Killing VNC Process Manually

Try running

ps -ef | grep vnc

to see which VNC services are running.


As @bob has mentioned use the command -

ps -ef | grep vnc

It will list all the vnc related process that are in running state.

So note down the PID of the process having the name

Xvnc

And execute the command kill -9 <PID of Xvnc Process(es)>

I will kill the VNC server.

Then restart the VNC server and think are back.