Hi,
while trying to resurrect my old Macbook as an 32 bit kernel testing device,
I think someone broke the radeon driver on this first generation pure EFI boot
Macbook.
My guess would be that the introduction of the vga_switcheroo code did break the
radeon_get_bios functionality.
I will try again without radeon_atrm_get_bios and radeon_acpi_vfct_bios.
kind regards
thomas