VNC server (x11vnc)

[Skazochnik]

Hello.

I have some issue with setup remote connection to VNC bu using x11vnc. The main idea is provide remote connection to logon window .
What i did:
Make changes in:

Code:

nano /etc/X11/xorg.conf.d/20-modesetting.conf

Code:

Section "Monitor"
       Identifier      "Configured Monitor"
EndSection

Section "Screen"
       Identifier      "Default Screen"
       Monitor         "Configured Monitor"
       Device          "Rockchip Graphics"
       SubSection "Display"
               Virtual 1920 1200
       EndSubSection
EndSection

Section "Device"
   Identifier  "Rockchip Graphics"
   Driver      "modesetting"
   Option      "AccelMethod"    "glamor"
   Option      "Dri2Vsync"      "false"
EndSection

Just setup resolution 1920x1200

install x11vnc and password:

Code:

sudo apt install x11vnc

Code:

$ x11vnc -storepasswd "password" /etc/x11vnc.pass

creating service:
 vi /lib/systemd/system/x11vnc.service 

Code:

[Unit]
Description=Start x11vnc at startup.
After=multi-user.target
[Service]
Type=simple
ExecStart=/usr/bin/x11vnc -auth guess  -forever -loop -noxdamage -repeat -rfbauth /etc/x11vnc.pass -rfbport 5900 -shared

[Install]
WantedBy=multi-user.target

reload services list:
sudo systemctl daemon-reload
enable autostart:
sudo systemctl enable x11vnc.service
start service:
sudo systemctl start x11vnc.service
check status:
sudo systemctl status x11vnc.service

but afre connection i getting black screen with mouse but on monitor i can run application and etc. 
Question: Whan have to be changed to get picture on VNC client ?