title: Error in tightVNC viewer no connection could be made because the target machine actively refused it
body: <p>I am using TightVNC viewer from Window7 to connect the Ubuntu machine. I got the error "Error in tightVNC viewer no connection could be made because the target machine actively refused it.</p>
  
  <p>I do not have any firewall setup.</p>
  
  <p>When i run, ps -ef | grep vnc:: i get</p>
  
  <pre><code>root      5265  4521  0 15:57 pts/1    00:00:00 sudo x11vnc -safer -localhost -nopw -accept popup:0 -once -viewonly -display :0
  root      5266  5265  0 15:57 pts/1    00:00:00 x11vnc -safer -localhost -nopw -accept popup:0 -once -viewonly -display :0
  mmm 5890  5269  0 16:06 pts/2    00:00:00 grep --color=auto vnc
  </code></pre>
  
  <p>On, x11vnc -forever -usepw -httpdir /usr/share/vnc-java/ -httpport 5800</p>
  
  <p>23/05/2014 16:16:12 <em>*</em> XOpenDisplay failed (:0)</p>
  
  <p><strong>* x11vnc was unable to open the X DISPLAY: ":0", it cannot continue.
  *</strong> There may be "Xlib:" error messages above with details about the failure.</p>
  
  <p>I am not sure where is the issue.</p>
  
  <p>I tried connecting like, 171.69.35.33
  171.69.35.33:5900
  171.69.35.33::5901</p>
  
  <p>f4rom tightvnc viewer.</p>
  
  <p>ps aux | grep vnc
  117       6125  2.1  8.3 4832760 679396 ?      Sl   16:14   1:13 /usr/bin/kvm -S -M pc-1.0 -enable-kvm -m 4096 -smp 4,sockets=4,cores=1,threads=1 -name talon -uuid 33c53705-1847-e2a4-897d-436c39337179 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/talon.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -drive file=/home/nso/build23-patch/talon-amd64-0.0.0.23_output/talon-amd64-0.0.0.23.qcow2,if=none,id=drive-ide0-0-0,format=qcow2 -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive file=/home/nso/build23-patch/talon-amd64-0.0.0.23_output/talon.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=18,id=hostnet0,vhost=on,vhostfd=19 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:16:3e:36:ce:ec,bus=pci.0,addr=0x3,bootindex=2 -chardev socket,id=charserial0,host=127.0.0.1,port=2225,telnet,server,nowait -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:1 -vga cirrus -device intel-hda,id=sound0,bus=pci.0,addr=0x5 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7
  mandnaya  6756  0.0  0.0   8112   896 pts/2    R+   17:10   0:00 grep --color=auto vnc</p>