The error message you're encountering, "general protection fault in libharfbuzz.so.0.20704.0," indicates a problem with the libharfbuzz library, which is used for text shaping and rendering. This issue may be related to library compatibility or a bug in the EasyConnect VPN client.

Here are some steps you can take to troubleshoot and potentially resolve this issue:

Check for Updated EasyConnect Client:
Ensure that you have the latest version of the EasyConnect client. Visit the SSLVPN page of your firewall to see if there's a newer version available for download. Sometimes, software updates include bug fixes and compatibility improvements.

Library Compatibility:
It's good that you've tried using older versions of libpango, but you may also want to check the compatibility of libharfbuzz with your system. It's possible that the EasyConnect client is not compatible with the version of libharfbuzz provided by Kubuntu 22.04.3.

Dependency Issues:
Review the system requirements and dependencies for the EasyConnect client. Make sure you have all the necessary libraries and packages installed on your Kubuntu system. You might need to install additional packages to satisfy the client's dependencies.

Run EasyConnect in Compatibility Mode:
You can try running the EasyConnect client in compatibility mode, which may help with library compatibility issues. To do this, open a terminal and run the following command, replacing /path/to/easyconnect with the actual path to the EasyConnect executable:

LD_LIBRARY_PATH=/path/to/easyconnect /path/to/easyconnect
This sets the library path to the location of the EasyConnect client, which may help it find the required libraries.

Check for Logs:
Review the logs generated by the EasyConnect client itself. The client may produce its own log files in a specific directory. Look for any error messages or hints in these logs that could help diagnose the issue.

Contact Support:
If none of the above steps resolve the issue, consider reaching out to the support provided by the vendor of your firewall or VPN client. They may be aware of the issue and have specific guidance or a solution for Kubuntu 22.04.3.

Consider Using Alternative VPN Clients:
If you continue to encounter problems with EasyConnect, you might consider using an alternative VPN client that is known to work well with your Kubuntu version. OpenConnect and AnyConnect are popular VPN clients that are often used in Linux environments.

Remember to back up any important data and configurations before making significant changes to your system, and be cautious when making changes to library versions to avoid causing system instability.

The error message you're encountering, "general protection fault in libharfbuzz.so.0.20704.0," indicates a problem with the libharfbuzz library, which is used for text shaping and rendering. This issue may be related to library compatibility or a bug in the EasyConnect VPN client.

Here are some steps you can take to troubleshoot and potentially resolve this issue:

Check for Updated EasyConnect Client:
Ensure that you have the latest version of the EasyConnect client. Visit the SSLVPN page of your firewall to see if there's a newer version available for download. Sometimes, software updates include bug fixes and compatibility improvements.

Library Compatibility:
It's good that you've tried using older versions of libpango, but you may also want to check the compatibility of libharfbuzz with your system. It's possible that the EasyConnect client is not compatible with the version of libharfbuzz provided by Kubuntu 22.04.3.

Dependency Issues:
Review the system requirements and dependencies for the EasyConnect client. Make sure you have all the necessary libraries and packages installed on your Kubuntu system. You might need to install additional packages to satisfy the client's dependencies.

Run EasyConnect in Compatibility Mode:
You can try running the EasyConnect client in compatibility mode, which may help with library compatibility issues. To do this, open a terminal and run the following command, replacing /path/to/easyconnect with the actual path to the EasyConnect executable:

LD_LIBRARY_PATH=/path/to/easyconnect /path/to/easyconnect
This sets the library path to the location of the EasyConnect client, which may help it find the required libraries.

Check for Logs:
Review the logs generated by the EasyConnect client itself. The client may produce its own log files in a specific directory. Look for any error messages or hints in these logs that could help diagnose the issue.

Contact Support:
If none of the above steps resolve the issue, consider reaching out to the support provided by the vendor of your firewall or VPN client. They may be aware of the issue and have specific guidance or a solution for Kubuntu 22.04.3.

Consider Using Alternative VPN Clients:
If you continue to encounter problems with EasyConnect, you might consider using an alternative VPN client that is known to work well with your Kubuntu version. OpenConnect and AnyConnect are popular VPN clients that are often used in Linux environments.

Remember to back up any important data and configurations before making significant changes to your system, and be cautious when making changes to library versions to avoid causing system instability.