Linux on Apple Silicon has always felt a little bit like a long-running engineering heist: take a tightly integrated platform built for macOS, understand the pieces Apple does not document, and make a modern Linux desktop work without compromising on the experience. Now, the Asahi Linux project says it is “almost ready” to release official support for Apple’s M3 Mac lineup.

That is a bigger milestone than it may initially sound. M3 Macs are no longer the newest Apple laptops and desktops, but they are still widely sold, widely used, and represent a meaningful shift in Apple Silicon hardware. Getting them into the supported Asahi Linux fold would give owners another practical way to run Linux natively on their machines rather than relying solely on virtual machines or older M1 and M2 hardware.

The announcement arrived in Asahi Linux’s latest progress report, which details a string of hardware breakthroughs that have brought the project close to an official M3 release. Crucially, this is not simply a case of getting a machine to boot to a command prompt. The team says it now has working support for built-in webcams, microphones, USB 3.0, and Thunderbolt across the M3 family – the kind of essential hardware coverage that determines whether a Linux installation can be used day to day.

For M3 Macs with built-in cameras, the final obstacle was a small difference affecting the M3 Max image signal processor. Asahi contributor chaos_princess added the missing initialization support, enabling webcam functionality across M3-series machines that include one. The same developer also worked out changes to the built-in microphone hardware, including a new high-frequency decimator and a much larger initialization message required by the newer Macs.

Those might sound like obscure driver details, but they matter in very practical ways. A laptop without a working microphone or webcam is not much use for video calls, voice recording, remote work, or even basic identity checks. Asahi’s progress suggests M3 support is reaching the point where users can reasonably expect their Mac to behave like a laptop rather than a fascinating developer experiment.

USB-C connectivity was another notable hurdle. Apple changed the port-controller design beginning with M3 Pro and M3 Max systems, moving from the older Apple-specific Texas Instruments CD3217 controller, which uses I2C, to an ACE3 controller that communicates over SPMI. The Asahi team had to reverse engineer that change, but says both the SPMI interface and ACE3 are now functioning, restoring USB 3.0 and Thunderbolt support across the M3 range.

That is especially important for MacBook Pro owners. USB-C ports on Apple laptops are doing far more than charging: they can connect displays, storage, docks, audio interfaces, Ethernet adapters, and other accessories. Full port support helps turn an M3 Mac running Linux into a viable workstation, rather than a system users need to handle carefully around peripherals.

Why M3 is different

Asahi Linux has supported Apple Silicon hardware for years, but every new generation is a fresh reverse-engineering project. Apple controls the system-on-chip, firmware, display processor, GPU architecture, security components, and boot process as a tightly connected whole. There is no conventional PC-style firmware handoff or standard collection of vendor drivers waiting to be installed.

The project is targeting the firmware interface, or ABI, from macOS 14.8.3 for M3 machines. That is necessary because Apple packages the GPU and display-controller firmware with specific macOS releases, meaning Linux support must account for the interfaces exposed by that particular firmware generation. Asahi says M3 display-controller support is now approaching feature parity with the macOS 13.5-era interface it uses on M1 and M2 hardware.

That careful, generation-by-generation work is why “official support” carries weight here. It generally means more than a developer build that works under perfect conditions. It means the installer, drivers, firmware expectations, and distribution integration are nearing a state where more users can take the plunge.

Video acceleration is improving

The M3 milestone is arriving alongside work that could materially improve the everyday desktop experience. Asahi has been refining support for Apple’s hardware video decoder, known as AVD, which handles H.264, H.265/HEVC, and VP9 on M1 and M2 Macs. On M3 and later chips, it can also decode AV1 video in hardware.

Hardware decoding is a major quality-of-life feature for anyone who watches high-resolution video, streams media, or uses browser-heavy workflows. Without it, a system may lean much more heavily on CPU decoding, which can hurt battery life, increase heat, and make playback less efficient. The project says H.264, HEVC, and VP9 decoding are now mostly reliable on its supported machines, though desktop integration is still a work in progress.

There are still limitations. Asahi says accelerated decoding does not yet ship by default in Fedora Asahi Remix, and it currently will not work inside Firefox’s video-decoding sandbox. Even so, the project has reached the stage where VA-API-compatible software can access the Apple video hardware through a translation layer, provided users set up the necessary software and environment variable.

The longer-term goal is more ambitious than simply lowering CPU use. Asahi developers are working toward direct scanout, a path that lets decoded video frames move more efficiently from the video engine to the display controller. In ideal cases, this could reduce memory copies and allow the GPU to remain idle while video is playing, helping lower power use.

The M4 challenge is already underway

The project is not stopping at M3. The same report details early work on M4 and even M5 Apple Silicon, although Asahi is clear that those machines are not ready for installer support yet. The team has working NVMe storage support on M4 and M5 hardware, has reached a point where PCIe devices can be enumerated, and has addressed a crash that occurred when Linux enabled more than one CPU core.

M4 has introduced tougher low-level complications, including a change to how CPU cores behave while idle and Apple’s mandatory Secure Page Table Monitor, or SPTM, for macOS. Asahi developers have found ways to keep their m1n1 hypervisor useful on those systems by emulating Apple-specific security features and loading the SPTM component in the way Apple’s XNU kernel expects.

That work will not immediately affect someone installing Linux on an M3 Mac, but it offers a useful reminder of what Asahi is doing behind the scenes. This is not merely a distribution adapting existing drivers to a new laptop. It is a community project building and upstreaming a software foundation for hardware that was never designed to run Linux.

For M3 Mac owners, the message is fairly simple: official support appears close, and the feature list is beginning to look much more like a complete desktop or laptop experience. Asahi has not provided a firm launch date, but it says it will share more in the coming weeks.