Re: [PATCH v2 1/2] efi/libstub: enable apple-set-os for all apple devices

Lukas Wunner
2026-01-28T15:45:33Z

On Wed, Jan 28, 2026 at 02:58:37PM +0000, Atharva Tiwari wrote:
> Make apple-set-os run on all macs, as
> apple-set-os is needed to use eGPUs and iGPU.

As discussed previously, your patch will regress older MacBook Airs
which use SPI to access keyboard + trackpad if the set_os protocol
is invoked:

https://lore.kernel.org/all/ZoJPgSlZJ3ZlU2zL@wunner.de/

The last time this topic came up, I suggested counting the number of
GPUs instead of using the DMI quirk. I even provided a patch but
nobody with an eGPU bothered to test it, so the thread fizzled out:

https://lore.kernel.org/all/Z6paeFrjdv7L3mtv@wunner.de/

Maybe you could give it a spin and verify if it fixes the issue for you?

Thanks,

Lukas