Mike Banon has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/38224 )
Change subject: [TESTME]pcengines/apu1: fix the VGA-related PCI resource allocation problems ......................................................................
Patch Set 2:
(1 comment)
https://review.coreboot.org/c/coreboot/+/38224/1//COMMIT_MSG Commit Message:
https://review.coreboot.org/c/coreboot/+/38224/1//COMMIT_MSG@11 PS1, Line 11: converter. It does not bring any downsides if there is no discrete VGA adapter.
What is the error messages? […]
Error messages example:
radeon 0000:00:01.0: Fatal error during GPU init [TTM] Trying to take down uninitialized memory manager type 1 [drm:radeon_get_bios [radeon]] *ERROR* ACPI VFCT image header truncated
Test example:
Successfully boot a coreboot --> SeaBIOS --> Linux without a discrete VGA adapter installed, then plug in a discrete VGA and repeat the experiment: Linux will freeze shortly after displaying these messages. However, with this fix, everything is booting and working OK.
Although I didn't test on pcengines/apu1 (hence a [TESTME] label), I've discovered this problem and solution on 3 other different AGESA boards (AM1I-A, A88XM-E and G505S - although for G505S this change alone isn't enough), so I believe the same solution should apply for the other AGESA boards as well - and committed a lot of these "[TESTME] ... fix the VGA-related PCI resource allocation problems" changes.