4l3x4f1sh3r
9 hours ago
Hi HN, everyone knows the T2 Macs, the neglected last generation before Apple decided to switch to ARM. MacOS 26 is the last supported release and it runs terrible on some of these devices... they simply can't cope with enough power to give users a smooth experience. That's why the devices are affordable and just right to put Linux on it, to give them another few years of life. There is a community called T2linux, who already did the major lifting a couple of years ago. They wrote essential drivers to communicate with the T2 security chip in order to get Keyboard, Trackpad, Sound and the internal Camera to work. They patched the kernel and maintain own versions of all major distributions.
While this brings much choice to the users, a lot of problems come with that approach, too. You can't easily rule out bugs, since every distro configuration is totally different. There are so many different repos and quirks needed to make things work, on I believe 16 different T2 Mac models? This can lead to frustration at the developer side: When we offered code changes and wanted them tested, we had to deal with not directly comparable results and a lot of distro-specific "noise".
Asahi has shown the value of concentrating development around a single reference platform. So we decided to do the same here and created KaiT2en. That is our clean reference platform based on Fedora. We rewrote the necessary t2linux kernel patches into DKMS modules. Yes, we're using the vanilla Fedora kernel. We've only included what's really necessary.
We've already fixed suspend, the shutdown path and the touchbar. We did a major overhaul to the audio driver. We included a brand new touch bar daemon and wrote an automatic installer to get this installed as smooth as possible.
We're working on open problems like better dGPU or Thunderbolt support.
Our long-term goal is to upstream as much code as possible. Until then, we want to give users and developers alike a smooth and consistent linux experience on T2 Macs.