From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 66791] Radeon fails to find vbios on macbook pro 2, 1 (2007) for
x1600 using kernel EFI stub
Date: Tue, 10 Dec 2013 03:06:48 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=66791
--- Comment #3 from Alex Deucher ---
I can't find the patches off hand, but IIRC, you cannot use grub to load the
firmware as the information is only accessible before you exit the boot
services in EFI. The kernel must be booted using EFI stub booting (that's
where the code for getting the bios image is). If you are already using EFI
stub booting, maybe you need to add additional handling for your mac? Anyway,
this isn't really a radeon driver issue per se, it's a mac platform bug.
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