How to setup x11vnc server

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1 Scope of this document

• Ubuntu Focal Desktop system on RK3399/RK3568/RK3588 platforms
• Debian Bullseye Desktop system on RK3588 platform
• For FriendlyDesktop on RK3399 platform, refer to How to setup VNC server on NanoPC-T4

2 Step 1: Install x11vnc

sudo apt update
sudo apt-get install x11vnc net-tools

3 Step 2: Set password

su pi
x11vnc -storepasswd

4 Step 3: Create .Xauthority

touch /home/pi/.Xauthority
xauth add :0 . `mcookie`

5 Step 4: Configure automatic desktop login

5.1 For Ubuntu Focal Desktop

Create directory and file

sudo mkdir /etc/sddm.conf.d
sudo vim /etc/sddm.conf.d/autologin

Content of autologin file:

[Autologin]
User=pi
Session=lxqt.desktop
Relogin=false

Restart.

5.2 For Debian Bullseye Desktop

By default, automatic login is enabled. Check configuration with the following file:

$ grep autologin-user /etc/lightdm/lightdm.conf
# autologin-user = User to log in with by default (overrides autologin-guest)
# autologin-user-timeout = Number of seconds to wait before loading default user
autologin-user=pi
autologin-user-timeout=0

6 Step 5: Run x11vnc at startup

Create file /etc/systemd/system/x11vnc.service

sudo vim /etc/systemd/system/x11vnc.service

Content of x11vnc.service:

[Unit]
Description=Start x11vnc at startup.
After=network-online.target
 
[Service]
Type=simple
ExecStart=/usr/bin/x11vnc -display :0 -auth /home/pi/.Xauthority -rfbauth /home/pi/.vnc/passwd -rfbport 5900 -forever -loop -noxdamage -repeat -shared -capslock -nomodtweak
User=pi
Group=pi
WorkingDirectory=/home/pi
ExecStop=/bin/kill -TERM $MAINPID
ExecReload=/bin/kill -HUP $MAINPID
KillMode=control-group
Restart=on-failure
Environment=DISPLAY=:0
Environment=XAUTHORITY=/home/pi/.Xauthority
 
[Install]
WantedBy=graphical.target

Enable systemd service

sudo systemctl daemon-reload
sudo systemctl restart x11vnc.service

7 Step 6: Access from a computer

Use VNC client to access the following address:
Board IP:5900