History might consider the most important aspect of Ubuntu 24.04 to be something that it doesn't have: vulnerabilities to the XZ backdoor that nearly took over the global Linux scene.
Betas, and the final release of Ubuntu 24.04, a long-term support (LTS) release of the venerable Linux distribution, were delayed, as backing firm Canonical worked in early April 2024 to rebuild every binary included in the release. xz Utils, an almost ubiquitous data-compression package on Unix-like systems, had been compromised through a long-term and elaborate supply-chain attack, discovered only because a Microsoft engineer noted some oddities with SSH performance on a Debian system. Ubuntu, along with just about every other regularly updating software platform, had a lot of work to do this month.
What is actually new in Ubuntu 24.04, or "Noble Numbat?" Quite a bit, especially if you're the type who sticks to LTS releases. The big new changes are a very slick new installer, using the same Subiquity back-end as the Server releases, and redesigned with a whole new front-end in Flutter. ZFS encryption is back as a default install option, along with hardware-backed (i.e. TPM) full-disk encryption, plus more guidance for people looking to dual-boot with Windows setups and BitLocker. Netplan 1.0 is the default network configuration tool now. And the default installation is "Minimal," as introduced in 23.10.
What else? Lots of little things:
- Support for autoinstall, i.e. YAML-based installation workflows
- A separate, less background-memory-eating firmware updating tool
- Additional support for Group Policy Objects (GPOs) in Active Directory environments
- Security improvements to Personal Package Archives (PPA) software setups
- Restrictions to unprivileged user namespace through apparmor, which may impact some third-party apps downloaded from the web
- A new Ubuntu App Center, replacing the Snap Store that defaults to Snaps but still offers traditional .deb installs (and numerous angles of critique for Snap partisans)
- Firefox is a native Wayland application, and Thunderbird is a Snap package only
- More fingerprint reader support
- Improved Power Profiles Manager, especially for portable AMD devices
- Support for Apple's preferred HEIF/HEIC files, with thumbnail previews
- Snapshot replaces Cheese, and GNOME games has been removed
- Virtual memory mapping changes that make many modern games run better through Proton, per OMG Ubuntu
- Linux kernel 6.8, which, among other things, improves Intel Meteor Lake CPU performance and supports Nintendo Switch Online controllers
The suggested system requirements for Ubuntu 24.04 are a 2 GHz dual-core processor, 4 GB memory, and 25 GB free storage space. There is a dedicated WSL edition of 24.04 out for Windows systems.
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