X11vnc not working on Ubuntu 20.04

How to solve X11vnc not working on Ubuntu 20.04

To solve issues with X11vnc on Ubuntu 20.04, you can try the following steps:

• Make sure that the X11vnc package is installed on your system. You can check this by running the following command:

dpkg -l | grep x11vnc

If the package is not installed, you can install it by running the following command:

 sudo apt-get install x11vnc

• Check if the X11vnc server is running. You can do this using this command:

ps aux | grep x11vnc

If the X11vnc server is not running, you can start it by using the following command:

x11vnc -display :0

• Ensure that your system’s firewall is not blocking connections to the X11vnc server. You can check the firewall rules by running the following command:

sudo ufw status

If the firewall is enabled and blocking connections to the X11vnc server, you can allow connections by running the following command:

sudo ufw allow 5900/tcp

• DISPLAY environment variable should be set correctly. You can check the value of this variable by running the following command:

echo $DISPLAY

The value of this variable should be “:0”. If it is not set correctly, you can set it by running the following command:

export DISPLAY=:0

• Make sure that the X11vnc client is connected to the correct IP address and port. The default IP address is “localhost” and the default port is 5900. You can specify a different IP address or port by using the “-remote” and “-rfbport” options when starting the X11vnc client.
•  Check the logs for any error messages that might indicate the cause of the issue. The X11vnc log file is usually located at “/var/log/x11vnc.log”.

I hope these steps help! 

Also Read: Puppy Linux