Setting up VNC for Ubuntu 16.04 LTS

Hi Experts,

My server is Ubuntu 16.04 LTS.
I am following the steps of https://poweruphosting.com/blog/setup-vnc-server-on-ubuntu/ to set up the VNC server.
However, I fail in the last step like below. Can you please help me with this VNC configuration.

hsu@hcavfb11:~$ sudo systemctl status vncserver@1
● vncserver@1.service - Start TightVNC server at startup
   Loaded: loaded (/etc/systemd/system/vncserver@.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Fri 2017-11-24 10:31:34 JST; 18min ago

Nov 24 10:31:34 hcavfb11 systemd[1]: Starting Start TightVNC server at startup...
Nov 24 10:31:34 hcavfb11 systemd[1]: vncserver@1.service: Control process exited, code=exited status=217
Nov 24 10:31:34 hcavfb11 systemd[1]: Failed to start Start TightVNC server at startup.
Nov 24 10:31:34 hcavfb11 systemd[1]: vncserver@1.service: Unit entered failed state.
Nov 24 10:31:34 hcavfb11 systemd[1]: vncserver@1.service: Failed with result 'exit-code'.
hsu@hcavfb11:~$

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The last step is creating a VNC Service File as below -

Set up the VNC server as a systemd service. This will make it possible to start, stop, and restart it as needed, like any other systemd service.

First, create a new unit file called

/etc/systemd/system/vncserver@.service

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using your favorite text editor:

sudo nano /etc/systemd/system/vncserver@.service

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Copy and paste the following into it. Be sure to change the value of User and the username in the value of PIDFILE to match your username.

/etc/systemd/system/vncserver@.service 
[Unit]
Description=Start TightVNC server at startup
After=syslog.target network.target

[Service]
Type=forking
User=sammy
PAMName=login
PIDFile=/home/sammy/.vnc/%H:%i.pid
ExecStartPre=-/usr/bin/vncserver -kill :%i > /dev/null 2>&1
ExecStart=/usr/bin/vncserver -depth 24 -geometry 1280x800 :%i
ExecStop=/usr/bin/vncserver -kill :%i

[Install]
WantedBy=multi-user.target

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Save and close the file.

Next, make the system aware of the new unit file.

 $   sudo systemctl daemon-reload

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Enable the unit file.

  $  sudo systemctl enable vncserver@1.service

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Stop the current instance of the VNC server if it's still running.

$   vncserver -kill :1

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Then start it as you would start any other systemd service.

 $   sudo systemctl start vncserver@1

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You can verify that it started with this command:

$  sudo systemctl status vncserver@1

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If it started correctly, the output should look like this:

Output

vncserver@1.service - TightVNC server on Ubuntu 16.04
   Loaded: loaded (/etc/systemd/system/vncserver@.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2016-04-25 03:21:34 EDT; 6s ago
  Process: 2924 ExecStop=/usr/bin/vncserver -kill :%i (code=exited, status=0/SUCCESS)

...

 systemd[1]: Starting TightVNC server on Ubuntu 16.04...
 systemd[2938]: pam_unix(login:session): session opened for user finid by (uid=0)
 systemd[2949]: pam_unix(login:session): session opened for user finid by (uid=0)
 systemd[1]: Started TightVNC server on Ubuntu 16.04.

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Setting up VNC for Ubuntu 16.04 LTS

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