02-Installing_VNC_on_Linux

VNC (Virtual Network Computing) is a graphical desktop sharing system based on the Remote Frame Buffer protocol (RFB). It allows users to connect to a remote computer over the network and operate the remote computer's desktop as if it were a local one.

SDK$ - Hereinafter refers to the source code path.

console$ - Hereinafter generally refers to the motherboard command-line console.

ADB$ - Android Debug Bridge command-line tool. Hereinafter generally refers to an environment where ADB can be run.

Configuring the VNC Server on the Motherboard

Installing the VNC Service

console$ sudo apt-get install tigervnc-standalone-server tigervnc-common -y

Setting the VNC Password

Execute the vncpasswd command to set the VNC password. This is not the password for the user account but is specifically used for VNC clients to connect to the VNC server.

console$ vncpasswd

Remember the password for later use when connecting the client.

Configuring Desktop Startup

Create a file named $HOME/.vnc/xstartup with the following content:

#!/bin/sh
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
exec startxfce4

Ensure that the xstartup file has executable permissions.

console$ chmod +x $HOME/.vnc/xstartup

Setting up the systemd Service to Start and Stop VNC

To create a systemd service to start the VNC server, create the file /etc/systemd/system/vncserver@.service. Use sudo or log in as the root user since this directory is read-only.

[Unit]
Description=Remote desktop service (VNC)
After=syslog.target network.target

[Service]
Type=simple
User=kickpi
PAMName=login
PIDFile=/home/%u/.vnc/%H%i.pid
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill :%i > /dev/null 2>&1 || : '
ExecStart=/usr/bin/vncserver :%i -localhost no -geometry 1440x900 -alwaysshared -fg
ExecStop=/usr/bin/vncserver -kill :%i

[Install]
WantedBy=multi-user.target

The following commands are for using systemd.

To start the VNC service:

sudo systemctl start vncserver@1.service

To stop the VNC service:

sudo systemctl stop vncserver@1.service

To restart the VNC service:

sudo systemctl restart vncserver@1.service

Connecting to VNC from Windows

Downloading MobaXterm

Download MobaXterm from the following link: https://mobaxterm.mobatek.net/

MobaXterm Operation Steps

  1. Create a new session window.

  2. Select the session window type as VNC.

  3. Enter the IP address.

  4. Enter the port number (5901).

  5. Start the session window.

image-20250428102638564

  1. Enter the password you set with vncpasswd and click OK.

image-20250422152029118

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