[Unit]
Description=Start VNC service
Requires=display-manager.service
After=display-manager.service
[Service]
Type=simple
Environment=X11VNC_REVERSE_CONNECTION_NO_AUTH=1
ExecStart=/usr/bin/x11vnc -auth guess -forever -loop -xkb -noxfixes -noxrecord -noxdamage -repeat -shared -dontdisconnect -many -display :0 -rfbport 5900 -rfbauth /etc/passwd.vnc -o /var/log/x11vnc.log
[Install]
WantedBy=multi-user.target