Re: [PATCH v3 0/2] efi/x86: Call set_os() protocol on dual GPU Macs

Lukas Wunner
2024-07-24T16:28:25Z

On Wed, Jul 24, 2024 at 04:21:03PM +0000, Aditya Garg wrote:
> https://www.phoronix.com/forums/forum/software/general-linux-open-source/1479158-linux-6-11-efi-will-fake-that-it-s-booting-apple-macos-to-fix-some-dual-gpu-macs?p=1479205#post1479205
>
> By looking at this post, it seems to affect non T2 Macs as well.

Disabling iGPU if dGPU is present was a behavior that existed well
before T2 Macs, yes. That affected MacBook Pros from Haswell onward.

However the question is since when iGPU is disabled if an eGPU is present.
I had never heard of this before. It would be good to have more datapoints
to come up with a quirk that's as narrowly applied as possible to avoid
regressions.

Thanks,

Lukas