Ubuntu 24.04 LTS vs. Ubuntu 23.10: What's New and Improved

Ubuntu 24.04 LTS (Noble Numbat) brings significant improvements over Ubuntu 23.10. This guide explores the key changes and enhancements to help users decide whether to upgrade or learn about the latest LTS release.

Introduction

Ubuntu 24.04 LTS offers enhanced performance, security, and usability with extended support until June 2029, making it ideal for users seeking long-term stability.

Upgrades and Support

  • Ubuntu 23.10 users: Automatic upgrade offers shortly after release
  • Ubuntu 22.04 LTS users: Upgrade offers when 24.04.1 LTS releases in August 2024

New Features in Ubuntu 24.04 LTS

Year 2038 Support for ARMhf Architecture

Addresses the Year 2038 problem for ARMhf, updating over 1000 packages to handle time with 64-bit values.

Updated Packages and Toolchains

  • Linux kernel: Version 6.8
  • Systemd: v255.4
  • GCC 14, Python 3.12, OpenJDK 21, and more

Security Improvements

Unprivileged User Namespace Restrictions

Enhanced security with restricted unprivileged user namespaces by default. AppArmor profiles manage permissions for applications requiring this feature.

TLS and RSA Key Changes

  • TLS 1.0, 1.1, and DTLS 1.0 forcefully disabled
  • 1024-bit RSA keys deprecated

Performance Enhancements

Performance Engineering Tools

New tools installed by default for debugging and optimizing system performance.

Configuration Changes

  • Reduced default priority of the proposed pocket in Apt
  • Systematic service restarts during unattended upgrades

Desktop Environment Updates

GNOME 46

Latest GNOME version with new features and fixes for improved user experience.

New App Center

Ubuntu App Center built with Flutter replaces the Snap Store, offering a modern interface for app management.

Server Enhancements

Apache2 2.4.58

Improved HTTP/2 connection handling and new directives for certificate management.

ClamAV 1.0.0

Major updates including support for decrypting encrypted XLS files and enhanced file inspection during scans.

Conclusion

Ubuntu 24.04 LTS offers substantial improvements over 23.10, with new features, updated packages, and enhanced security. It's an ideal choice for users seeking a stable, long-term supported operating system.

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