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Building a Linux GPU Driver for the M4 Mac Mini in One Month

82 pointsby 3h agocodyho.dev
27 comments
1h agoHN ↗

GPT-6 Astra and GPT-5.6 Sol are absolutely insane

Perhaps before Astra was nerfed. It is now the dumbest model right after Gemini. Sol still holds up.

49m agoHN ↗

Can't disagree more, but my experiences are my own.

1h agoHN ↗

Maybe I’m getting really old, and I know we live in changing times but the fact this works at all is insane, as in black magic insane.

I assume I’ll get used to it, but my mental model of what’s possible hasn’t been fully rewired yet.

49m agoHN ↗

I still can't quite believe it either!

1h agoHN ↗

This is super great. The biggest pain point of Asahi Linux is how it doesn't have GPU acceleration on M3 and newer, especially now that M6 is out!

However, Asahi Linux has a strictly no-AI policy [1]. So this great work can't be upstreamed. I expect to see a bunch of AI-assisted forks that get things working smoothly on newer hardware to dominate as most people just care about getting stuff working, while only a handful of purists stick to the non-AI version running on ancient hardware.

[1] https://asahilinux.org/llm-policy/

57m agoHN ↗

I imagine either they or others can take their discoveries and write a real driver now, though. The hard part was always the reversing the black box system.

50m agoHN ↗

:) I think we have a surprise in store here. Asahi don't have a monopoly over Linux for Apple Silicon, and upstream Linux absolutely does *NOT* ban LLMs.

3m agoHN ↗

i install proprietary modules for nvidia all the time, i'm not going to care if i have to do it for something else that i own

48m agoHN ↗

Asahi's long term goal is to get everything possible merged into the (actually) upstream projects anyways so any distro can just work. It'd be nice to see that continue rather than have forks on forks for the sake of singular differences (and it looks like proper upstreaming is what they are going after per the Remaining Work section).

1h agoHN ↗

It's extremely impressive that they were able to make a working driver so quickly. I think this is one of the best use cases for LLMs. You don't need someone to spend years reverse engineering undocumented hardware anymore. It will interesting to see how good the driver the LLMs came up with is, and whether it can be upstreamed into the Linux kernel.

47m agoHN ↗

Might be one of the only use cases where LLMs are necessary to succeed. Can't imagine the pain of reverse engineering a technology of this scale and "secrecy".

41m agoHN ↗

Traditional hardware RE centers around heroics by a small number of very smart people, see: marcan, Alyssa Rosenzweig, Asahi Lina, etc. What they did is insanely impressive, and given how hard it was with LLMs I'm sure I would not personally be able to do this work without LLMs. That said, I'm looking forward to a world where the staring at hexdumps and traces can be delegated to LLMs and talented humans can spend their time building as opposed to head banging.

45m agoHN ↗

The problem I’m finding, at least with today’s models, is that it produces disposable software. It’s not good at making well-architected, durable software. Stuff that could be maintained and bug-fixed.

I mean you can get good stuff out of it if you know what you are doing and guide it, but if you just say “here’s a regression suite. Write an implementation that passes” you will get something that works for a while but ages quickly and will need to be thrown away.

26m agoHN ↗

With today’s technology I’d still want a GPU driver developer guiding the LLM rather than some rando who is out of their element. But cutting down the exploration cycle time and giving the developer massive parallelism (have 10x agents exploring different hypotheses or features) is the real win. We don’t need to skip all the way to slop just to squeak out a little more effort savings.

58m agoHN ↗

Figuring out how the hardware works and how to interface with it to submit work is a significant step all by itself.

39m agoHN ↗

I am not by any means a copyright lawyer, so can anyone enlighten me on if it is a good idea for upstream projects to accept such kind of code from an ex-Apple employee, especially since Apple is currently suing OpenAI.

34m agoHN ↗

Great observation, two things:

- During my time at Apple I never saw any of the macOS source code, at all, even for userspace components. I had not even heard of things like SPTM.

- I have not worked there since June 2025

I don't believe that there's any risk due to my former Apple employment. As another example, WINE does not ban all former Microsoft employees, they just ban anyone who has ever looked at the Windows source code. If I felt there was even a chance that my employment at Apple may have exposed me to relevant internal secrets, I would refrain from contributing to community projects.

33m agoHN ↗

/goal have all this upstreamed to Linux

31m agoHN ↗

All this work is tainted since the poster is ex-Apple[1]. There is no way Linux will take that code, since people from Apple also contribute to Linux and this creates a major conflict.

There's also ongoing issues around Codex for this sort of thing, given Apple is suing OpenAI over stolen trade secrets[2]. And nobody knows whether training data in other models is similarly tainted.

[1]: https://codyho.dev/documents/cody_ho_resume.pdf

[2]: https://www.theguardian.com/technology/2026/jul/10/apple-sue...

1m agoHN ↗

Very sad. I really want to get Linux on newer Apple chips working flawlessly but I can understand the legal minefield about this particular work.

30m agoHN ↗

Clean room is not 100% legally necessary for RE, but I would never touch an LLM to do RE work when there's even a chance the models have been trained on the thing I ultimately plan to reimplement.

Furthermore, given that Asahi Linux, the biggest game in town when it comes to running Linux on Apple silicon, is trying to be cleanroom, it is incredibly rude of you to not mention LLMs until after showing a page full of LLM-derived firmware ABI. This is a trap for anyone who's trying to be cleanroom.

24m agoHN ↗

The previous “Part 1” post is very candid about the approach, and the titles of both posts mention prompting.

17m agoHN ↗

im pretty literate in intellectual property, but im pretty confused about the no looking at binary code artifacts bit.

13m agoHN ↗

https://www.reddit.com/r/AsahiLinux/comments/1whecn1/comment...

The author was banned from Asahi Linux for hiding his extensive use of LLMs from us in another attempted contribution, and (more importantly) for concealing that he is a former Apple engineer with direct contacts to the people involved in Apple Silicon development. Make of this what you will.

2m agoHN ↗

I certainly dont care about hiding LLM contributions and all crazy anti-LLM policies, but I really hope author can share process completely so this can be reproduced by someone not working for Apple.