mikeb mikeb has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/31929 )
Change subject: G505S dGPU support: scripts for applying the unofficial (not-merged-yet) patches ......................................................................
Patch Set 6:
For those who is coming there from the Internet, these dGPU patches help to resolve the following problem observed while running Linux on G505S with coreboot BIOS installed:
[ Time_1] [drm:radeon_get_bios [radeon]] *ERROR* ACPI VFCT image header truncated [ Time_2] radeon 0000:01:00.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0x0000 [ Time_3] radeon 0000:01:00.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0x0000 [ Time_4] [drm:radeon_get_bios [radeon]] *ERROR* Unable to locate a BIOS ROM [ Time_5] radeon 0000:01:00.0: Fatal error during GPU init [ Time_6] [drm] radeon: finishing device.