Ubuntu 24.04 LTS Developer Review: The Toolchain Finally Caught Up [2026]

Ubuntu 22.04 shipped with Python 3.10, GCC 11, and a kernel from 2022. For two years, every serious developer I know has been bolting on PPAs, Snaps, and manual installs just to get a modern toolchain running. Ubuntu 24.04 LTS "Noble Numbat" finally closes that gap. I've been running it on three dev machines and two production servers for over a year now, and this is the most developer-relevant Ubuntu LTS upgrade in a decade.

This Ubuntu 24.04 LTS developer review covers the things that actually matter to working engineers: the kernel, the compiler toolchain, the language runtimes, container support, and the sharp edges you'll hit during the upgrade. No desktop screenshot tours. No GNOME theme opinions.

What Ships in the Ubuntu 24.04 LTS Developer Toolchain?

The headline story of any LTS release is the default toolchain. Ubuntu 24.04 ships versions that are finally within striking distance of what you'd install manually anyway. Here's what changed versus 22.04, verified against packages.ubuntu.com:

The Python jump alone justifies the upgrade. Python 3.12 brought comprehension inlining and a 5% average performance improvement over 3.11 on the standard benchmark suite. If you're running data pipelines or ML training workflows, that's free performance from a system upgrade. No code changes.

GCC 13.2 is the default compiler, but GCC 14.2 is available in the universe repository if you want bleeding-edge C++23 support. I've been running GCC 14 on my CI builds for a C++ project, and the improved diagnostics alone saved me hours of debugging template instantiation errors. The error messages actually point you to the problem now instead of vomiting three pages of type signatures.

The real test of an LTS release isn't what's new. It's whether you can stop maintaining workarounds.

For the first time in years, I didn't need to add a single PPA to get a functional development environment on a fresh install. That matters more than any individual version bump.

Kernel 6.8: The Performance Story Nobody's Talking About

Kernel 6.8 is the most impactful part of this release for server-side developers. Most reviews bury it under desktop feature lists.

The biggest change is the EEVDF (Earliest Eligible Virtual Deadline First) scheduler, which replaced CFS as the default CPU scheduler starting in kernel 6.6 and is fully mature in 6.8. EEVDF reduces scheduling latency for interactive and latency-sensitive workloads. On my 16-core Ryzen build server, compilation jobs that previously showed inconsistent wall-clock times became noticeably more predictable. The variance on repeated builds dropped in a way I could actually feel while waiting for CI.

The io_uring subsystem also got serious work. If you're building high-throughput network services or database engines, kernel 6.8 supports io_uring zero-copy networking, which cuts memory copies for send operations. Anyone running custom TCP servers or leveraging io_uring for async I/O should care about this.

There's also improved bcachefs support (still experimental, don't bet production on it) and better Intel and AMD GPU drivers for local ML workloads. If you've been following how ROCm is evolving on consumer GPUs, the kernel-level driver improvements in 6.8 make that story even more compelling.

One thing to watch: if you're running PostgreSQL heavily, the Transparent Huge Pages interaction with kernel 6.8 can bite you. I wrote about the PostgreSQL THP performance issue in detail. Short version: check your THP settings after upgrading. Don't skip this.

Does Ubuntu 24.04 Support Docker and Kubernetes Out of the Box?

The container story on Ubuntu 24.04 is solid, but there's one change that will trip up anyone running automated provisioning.

Docker isn't installed by default (it never has been on Ubuntu), but the docker.io package in the repos is version 24.0. That means BuildKit by default, multi-platform builds, and the compose v2 plugin. If you need the absolute latest Docker Engine, you'll still want Docker's official apt repository. But the stock package is close enough for most workflows now.

Kubernetes tooling is where things get interesting. kubectl, kubeadm, and kubelet aren't in the default repos (they come from Kubernetes' own apt repo), but Ubuntu 24.04's kernel 6.8 includes improved cgroup v2 support and better eBPF capabilities that make it a stronger base for Kubernetes nodes. Canonical also continues pushing MicroK8s as a snap, and it works well for local dev clusters.

Here's what caught me off guard: Netplan is now the only network configuration tool. ifupdown is gone. If you have provisioning scripts that write to /etc/network/interfaces, they will break silently. Your containers will come up, but networking might not behave as expected. I spent a frustrating afternoon debugging this on a staging server before I realized what had changed. Don't be me.

nftables has also fully replaced iptables as the default firewall backend. Docker handles this transparently in most cases, but if you have custom iptables rules in your container networking stack, test thoroughly before you touch production.

Should You Upgrade From Ubuntu 22.04 to 24.04?

This is the question everyone actually wants answered. Here's my take after upgrading five machines — three workstations, two servers.

Upgrade now if:

• You're maintaining PPAs or manual installs for Python 3.12, GCC 13+, or Go 1.22. The LTS repos cover you now.
• You're running latency-sensitive workloads that would benefit from EEVDF and the kernel 6.8 improvements.
• You're building containers and want cgroup v2 as the default without kernel parameter hacking.
• Your 22.04 machines are development or staging. Low risk, real gains.

Wait if:

• You're running production databases and haven't tested your specific workload against kernel 6.8. THP behavior changes can hurt PostgreSQL and Redis performance if you don't tune for them.
• You rely on ifupdown and haven't migrated to Netplan.
• You have deeply customized iptables rules that need validation against the nftables backend.
• You're on 22.04 with HWE kernels and everything works fine. 22.04 is supported until April 2027 (2034 with Ubuntu Pro). No shame in riding it out.

The in-place upgrade via do-release-upgrade worked cleanly on my workstations. On the servers, I did fresh installs and migrated configurations. I've been through enough LTS upgrades to know that in-place on production is a coin flip. If your infrastructure-as-code supports fresh installs, do fresh installs.

If you're still deciding between Ubuntu and other distros entirely, I compared the developer experience between Linux Mint and Ubuntu. The calculus has shifted with 24.04.

The Boring Parts That Matter Most

A few changes that won't make headlines but will absolutely affect your daily workflow:

AppArmor 4.0 is the default now. If you're developing applications that interact with the filesystem or network in non-standard ways, you'll hit AppArmor denials that didn't exist on 22.04. Check dmesg when something mysteriously fails. This got me twice before I made it a habit.

Snap is more deeply integrated. Firefox as a snap is old news, but Thunderbird is now a snap too. More relevant for developers: the chromium-browser package is also a snap. If you're doing browser automation testing with Chromium, the snap confinement causes unexpected permission issues with Selenium or Playwright. I've seen this burn at least three people on my team.

systemd 255.4 brings soft-reboot, which lets you restart userspace without a full kernel reboot. For developers running local services, this means faster iteration after system config changes. It also adds encrypted credentials storage. No more plaintext secrets in systemd service files.

OpenSSH 9.6 defaults to disabling the RSA/SHA-1 signature algorithm. If you're connecting to older servers or embedded devices, your SSH connections will just... fail after upgrade. The fix is a one-line ssh_config entry, but this is the kind of thing that eats an hour of your day if you don't know it's coming.

Ubuntu 24.04 LTS Support Timeline

Canonical provides standard security updates until April 2029 — five years from release. Ubuntu Pro (free for up to five machines for personal use) extends that to April 2036. Twelve years total.

For enterprise teams, the twelve-year window means you can skip an entire LTS cycle (26.04) and still be covered. For individual developers, the five-year window means you don't need to think about this again until 2029.

The Verdict

Ubuntu 24.04 LTS is the first release in years where the default toolchain matches what developers actually use. Python 3.12, GCC 13, Go 1.22, Rust 1.75, and kernel 6.8. An LTS that doesn't feel two years behind on the day it ships.

The upgrade path has sharp edges — Netplan migration, nftables, AppArmor 4.0, OpenSSH defaults — but they're all documented and solvable in an afternoon. The gains in developer ergonomics and server performance are worth the trouble.

If you're still on 22.04 and spending time managing PPAs and workarounds, stop. This is one of those things where the boring answer is actually the right one: upgrade to the LTS, use the stock toolchain, and spend that maintenance time shipping features instead. Ubuntu 26.04 is coming, but 24.04 has already earned its place as the production baseline for the next few years. Do the upgrade.

Originally published on kunalganglani.com