Remote Desktop X11VNC

x11vnc is a tool that allows administrators to connect to the server's
real X desktop directly via VNC Viewer.

Ubuntu

The Ubuntu system requires the manual installation of the X desktop
environment. During the installation process, select lightdm as the
Display Manager:

   sudo apt update
   sudo apt install -y xserver-xorg-video-dummy x11vnc xfce4
   sudo vim /etc/X11/xorg.conf
   sudo reboot

The contents of /etc/X11/xorg.conf are:

   Section "Device"
       Identifier  "Configured Video Device"
       Driver      "dummy"
       VideoRam 256000
   EndSection

   Section "Monitor"
       Identifier  "Configured Monitor"
       HorizSync 5.0 - 1000.0
       VertRefresh 5.0 - 200.0
       ModeLine "1920x1080" 148.50 1920 2448 2492 2640 1080 1084 1089 1125 +Hsync +Vsync
   #    Modeline "1280x800" 24.15 1280 1312 1400 1432 800 819 822 841
   EndSection

   Section "Screen"
       Identifier  "Default Screen"
       Monitor     "Configured Monitor"
       Device      "Configured Video Device"
       DefaultDepth 24
       SubSection "Display"
       Depth 24
       Modes "1920x1080"
   #    Modes "1280x800"
       EndSubSection
   EndSection

After the installation is complete, start the x11vnc service:

   sudo x11vnc -display :0 -auth /var/lib/lightdm/.Xauthority &

You can then use the "$bm1688_ip:0" address to VNC remote connect from
a PC.

The following is the specific operation process for VNC Viewer:

(1) Users first download

VNC Viewer

 from the official website, selecting the appropriate installation
package based on their PC system.

(2) After installation, open VNC Viewer and skip the login.


(3) Enter the "$bm1688_ip:0" address of EC-A1688JD4:


(4) Click the circular button next to the linaro username, select
xfce, and enter the username and password, both are "linaro":


(5) Successfully enter the xfce4 desktop: