Ubuntu ARM Becomes First-Class: Livepatch, Steam, and Main Repository Arrive
Canonical’s latest Ubuntu on ARM Summer 2026 Update marks a major milestone in the platform’s evolution. After more than a decade of gradual improvements, ARM64 is now treated as a first-class architecture alongside x86_64, eliminating many of the long-standing differences that affected package delivery, system maintenance, desktop usability, and platform support.
From migrating ARM packages into Ubuntu’s primary package archive to enabling rebootless kernel patching with Livepatch, introducing Steam support, and solving Secure Boot challenges on Snapdragon laptops, Ubuntu 26.04 LTS significantly narrows the remaining feature gap between ARM and x86.
For developers, system administrators, and Linux enthusiasts, these changes represent the maturation of Ubuntu’s ARM ecosystem into a production-ready platform for servers, edge computing, and desktop workloads alike.
📦 ARM64 Packages Join the Main Ubuntu Repository #
The most significant infrastructure change is the migration of ARM64 packages from the long-standing ports.ubuntu.com repository into Ubuntu’s primary archive.
Life Before the Migration #
Since Ubuntu first introduced ARM support, non-x86 architectures—including:
- arm64
- armhf
- ppc64el
- s390x
- riscv64
were distributed through the separate ports infrastructure rather than the main Ubuntu archive.
Although fully functional, this arrangement introduced several disadvantages:
- Fewer mirror sites worldwide
- Reduced CDN coverage
- Slower package downloads
- Separate operational infrastructure
- Occasional delays compared to amd64 package publication
Many ARM users became accustomed to slower apt update and package installation performance compared with x86 systems.
Ubuntu 26.04 Changes Everything #
Beginning with Ubuntu 26.04 LTS, ARM64 packages are now hosted directly through archive.ubuntu.com, sharing the same infrastructure used by amd64.
Benefits include:
- Faster downloads through Ubuntu’s global mirror network
- Improved reliability and service availability
- Simultaneous package publication across architectures
- Simplified repository management
For most users, no workflow changes are required—only noticeably faster package management.
Behind the scenes, however, the migration required coordinated updates across multiple Ubuntu components, including release tooling, installation infrastructure, and upgrade utilities.
The migration has also been backported to Ubuntu 24.04 LTS, extending these improvements beyond future releases.
🔒 Livepatch Arrives on ARM64 #
Another major milestone is the arrival of Canonical Livepatch for ARM64.
Livepatch enables critical Linux kernel security updates to be applied without rebooting, minimizing downtime for production systems.
While x86 users have benefited from this capability for years, ARM deployments can now take advantage of the same technology.
Why Livepatch Was Difficult on ARM #
Supporting live kernel patching required several foundational improvements:
- Upstream kernel livepatch infrastructure
- Native ARM64 build farms
- Architecture-specific regression testing
- Automated validation pipelines
These investments allow Canonical to deliver production-quality live kernel updates across supported ARM platforms.
Ideal Use Cases #
Livepatch is particularly valuable for:
- ARM cloud servers
- Raspberry Pi clusters
- Edge computing infrastructure
- Industrial gateways
- High-availability production systems
Administrators can now deploy critical kernel security patches without interrupting running workloads.
Livepatch is included with Ubuntu Pro, which remains free for personal use on a limited number of systems.
🎮 Steam Comes to Ubuntu on ARM #
Perhaps the most visible desktop improvement is official support for Steam on ARM-based Ubuntu systems.
Historically, gaming on Linux ARM has been difficult because the Steam client is distributed only as an x86 application.
Canonical addressed this challenge by packaging:
- Steam
- FEX x86 emulation
- Supporting runtime components
into a unified Snap package.
Supported Hardware #
Current supported platforms include:
- Qualcomm Snapdragon X Elite laptops
- Radxa Orion O6 development boards
- Future Snapdragon X2 Elite systems
Gaming Expectations #
Compatibility depends on software emulation rather than native ARM binaries.
Current expectations are:
| Game Type | Expected Experience |
|---|---|
| Lightweight and 2D titles | Generally good compatibility |
| Mid-range games | Playable depending on GPU drivers |
| Modern AAA titles | Performance varies due to emulation overhead |
| Games with kernel anti-cheat | Mostly unsupported |
Although not every title is compatible today, Steam on ARM represents an important milestone for Linux desktop adoption on ARM hardware.
🛡️ Secure Boot Finally Works on Snapdragon X Elite #
One of Ubuntu’s most technically challenging projects involved enabling Secure Boot on Snapdragon X Elite laptops.
The Original Problem #
Unlike traditional x86 PCs, Snapdragon firmware typically does not provide Linux with a Device Tree during boot.
Without Secure Boot enabled, GRUB could simply load an external Device Tree.
Once Secure Boot entered the picture, however, every boot component required cryptographic verification.
An external Device Tree existed outside the trusted boot chain, preventing successful verification.
Canonical’s Solution: stubble #
Canonical developed a lightweight mechanism called stubble.
Rather than loading the Device Tree separately, it is embedded directly into the signed Linux kernel image.
This preserves Ubuntu’s existing signing pipeline while extending Secure Boot compatibility to Snapdragon platforms.
Beginning with Ubuntu 25.10, Secure Boot works on Snapdragon X Elite systems using the generic ARM64 installation image.
Ubuntu 26.04 LTS becomes the first long-term support release where this capability is available out of the box.
Canonical is also adapting the same approach for upcoming Snapdragon X2 Elite hardware.
🌐 ARM Desktop Software Continues to Expand #
Beyond core operating system improvements, the ARM desktop ecosystem has expanded considerably over the past year.
Google Chrome for Linux ARM64 #
Google has announced an official Chrome for Linux ARM64 release.
The browser will include native Widevine DRM, enabling services such as:
- Netflix
- Disney+
- Spotify
- Other DRM-protected streaming platforms
without requiring unofficial community workarounds.
Native Widevine support also benefits other applications distributed through Snap packages.
Beyond Qualcomm #
Canonical is also expanding support beyond Snapdragon processors.
The CIX P1 laptop became Canonical’s first ARM laptop enablement project based on a non-Qualcomm SoC.
Unlike Snapdragon devices, the CIX platform uses a traditional ACPI boot flow, closely resembling conventional x86 PCs.
This demonstrates Ubuntu’s commitment to supporting a broader ARM hardware ecosystem rather than focusing on a single silicon vendor.
Growing Snap Ecosystem #
Native ARM64 Snap packages continue to increase in number.
Recent additions include applications such as:
- OnlyOffice
- FreeCAD
- Teams for Linux
As more software vendors publish ARM-native builds, the application availability gap between ARM64 and amd64 continues to shrink.
📈 Fourteen Years of Progress #
Ubuntu’s ARM journey has progressed steadily over more than a decade.
| Year | Milestone |
|---|---|
| 2012 | Ubuntu 12.04 becomes one of the first commercially supported ARM Linux distributions |
| 2013 | Canonical announces ARMv8 (64-bit) support |
| 2024 | Ubuntu 24.04 LTS accelerates ARM ecosystem development |
| 2025 | Ubuntu 25.04 introduces generic installation images for Snapdragon X Elite |
| January 2026 | Steam for ARM enters public testing |
| March 2026 | Google announces Chrome for Linux ARM64 |
| May 2026 | Ubuntu Concept image released for the CIX P1 laptop |
| June 2026 | Steam reaches the stable channel and Livepatch launches for ARM64 |
| July 2026 | ARM64 packages migrate to the primary Ubuntu repository |
The timeline illustrates how Ubuntu has evolved from experimental ARM support into a mature operating system suitable for servers, desktops, and enterprise deployments.
🚀 What These Changes Mean for Users #
Ubuntu’s ARM improvements benefit a broad range of users.
Raspberry Pi and Edge Systems #
Users deploying Ubuntu on Raspberry Pi or similar ARM hardware can expect:
- Faster package downloads
- Improved repository reliability
- Live kernel patching without reboots
- Better long-term maintenance
Snapdragon Laptops #
Modern ARM laptops gain several desktop-focused improvements:
- Native Secure Boot support
- Steam installation through Snap
- Growing native software availability
- Upcoming Chrome support with Widevine DRM
These additions make ARM laptops significantly more practical as daily Linux workstations.
Developers and Enterprise Deployments #
Organizations building ARM-based infrastructure benefit from:
- Repository parity with x86
- Simplified package management
- Production-ready Livepatch
- Improved platform consistency
- Expanding ecosystem support
As ARM adoption accelerates across cloud infrastructure, edge computing, AI systems, and client devices, Ubuntu now provides a far more consistent experience regardless of processor architecture.
📖 Conclusion #
Ubuntu 26.04 LTS represents a defining moment for Linux on ARM. By promoting ARM64 to first-class status, Canonical has addressed many of the long-standing differences that separated ARM systems from their x86 counterparts.
The migration to the primary package archive improves software distribution, Livepatch brings enterprise-grade maintenance capabilities, Steam expands desktop usability, and Secure Boot support strengthens support for modern ARM laptops.
While Ubuntu’s ARM ecosystem will continue to evolve, the platform has reached a point where developers and end users can expect feature parity across most core operating system capabilities. As ARM hardware becomes increasingly common in servers, edge devices, and personal computers, Ubuntu is well positioned to serve as one of the most mature Linux distributions for the architecture.