How To Fix Error Job For Vncserver@:1.service Failed Because The Control Process Exited With Error Code. See “systemctl Status Vncserver@:1.service” And “journalctl -xe” For Details When Start VNC Server.

After install VNC server on CentOS, when i run command # systemctl start vncserver@:1.service to start it, i meet bellow error message.

# systemctl start vncserver@:1.service
Job for vncserver@:1.service failed because the control process exited with error code. See "systemctl status vncserver@:1.service" and "journalctl -xe" for details.

I search google for the resolution, finally i find below steps.

1. First login to linux OS with the user which you use in /etc/systemd/system/vncserver@:1.service file.
2. Verify file /usr/bin/vncserver exist and execute it in the terminal.

   [happyzhaosong@MiWiFi-R4A-srv ~]$ /usr/bin/vncserver 
   
   You will require a password to access your desktops.
   
   Password:
   Verify:
   Would you like to enter a view-only password (y/n)? y
   Password:
   Verify:
   xauth:  file /home/happyzhaosong/.Xauthority does not exist
   
   New 'MiWiFi-R4A-srv:3 (happyzhaosong)' desktop is MiWiFi-R4A-srv:3
   
   Creating default startup script /home/happyzhaosong/.vnc/xstartup
   
   Creating default config /home/happyzhaosong/.vnc/config
   
   Starting applications specified in /home/happyzhaosong/.vnc/xstartup
   
   Log file is /home/happyzhaosong/.vnc/MiWiFi-R4A-srv:3.log
   
   
   

3. Then it will create /home/happyzhaosong/.vnc/xstartup file.
4. Edit file /home/happyzhaosong/.vnc/xstartup, add # at the beginning of line vncserver -kill $DISPLAY to remove it.

   if [ -e /usr/bin/gnome-session -o -e /usr/bin/startkde ]; then
      # vncserver -kill $DISPLAY
   fi

5. If above method do not take effect, you can run command # rm -rf /tmp/.X11-unix/ with root user, and then reboot system.

   # rm -rf /tmp/.X11-unix/

6. If above method do not take effect, you can edit file /etc/systemd/system/vncserver@:1.service and change Service —> Type from forking to simple.

   # vim /etc/systemd/system/vncserver@:1.service
   
   
   # Edit Service section, change Type=forking to Type=simple. 
   
   [Service]
   
   Type=forking
   
   #Type=simple
   
   

7. Then run command # systemctl daemon-reload to update systemctl.
   

   # systemctl daemon-reload