i have a P5Q deluxe here that i would like to have the LGA771 xeon’s micro-code added to it.
from what i’ve seen that should be pretty easy. but i also need an aditional mod.
this bios seems to freeze if no gpu is detected during boot.
if i attach a rx 5700xt (dont question it) it would only show the post screen and i am able to navigate the bios settings. but the moment it tries to boot windows. the system halt’s on a black-screen right before the operating system loads.
this is due to the 5700xt lacking “legacy bios” features. (weird how the bios still works though)
this board does have a beta UEFI release. but i heard it is buggy. 1 gig is always reserved and no overclocking, so it is no option.
this can be bypassed by slotting in a nvidia gpu in the primary slot and connecting the 5700XT to the pcie 8x slot down below. and then the 5700xt functions properly.
but it is not ideal due to not having a proper 16x connection then.
is there a way to make it be fine if no GPU is detected? or. a ability to select which PCIE slot it uses for GPU? the current bios setting only allows for internal/PCIE1 selection.
Its simple, the 5700XT its a GPU with no legacy part present in vbios (never had, expected in modern cards), only EFI image with a GOP driver to be loaded by an UEFI environment/motherboard, either use that beta bios (and still may not work…age discrepancy of hw parts) or get another mb or stay with old GPUs.
if i slot a gtx 650 in the primary PCIE slot with the 5700xt in PCIE2. the system boots. and the 5700xt shows up and functions perfectly fine. (besides the huge cpu bottlenecks)
so it should work. the bios just does not detect a gpu and halt’s boot is what i suspect is happening. which should be fixable
Yes it works because the 650 have a legacy part in vbios and the ASUS uses legacy bios, so it picks the device that can be initialized using it as primary.
The 5700xt is operacional so only works after OS loaded, its correct.
but. if the bios moddified so it can ignore a “no gpu” situation. and continue post (like alot of other legacy boards are capable of doing)
then my cursed setup with the rx5700xt on LGA775 should work properly. besides the bios not showing up before OS boot of-course.
the current issue is. this board does not have a option build in to ignore having no gpu installed so it would always stall boot.
some other motherboards apparantly are fine with no gpu and will boot fine in these situations.
i might try attaching my 3080ti to this rig to see if it features a legacy bios part.
rtx 20 series was not supposed to have a legacy bios part. but a 2070 and a 2070 super both worked fine in legacy boards per my testing.
the goal for this rig is to mostly bin dozens and dozens of LGA775 chips and have some fun getting the best bench scores i can with this cpu. thus i need to have a gpu attached that’s overkill.
having the GTX650 attached to PCIE1 along with the actual bench GPU in PCIE2 can cause extra instability when doing overclocking stuff. along with PCIE lanes being cut in half.
So you want a mb bios to totally ignore a display output device upon all boot stages including POST but you want the OS to assume the same ignored device as primary display output …iGPU then ??? Good luck.
obviously the bios is aware of the rx 5700xt. even without a legacy gpu connected.
it even can display the bios menu’s and post screen out on the 5700XT if it’s the only card connected. it
just hangs when it actually proceeds to boot.
there has to be a way to get past that without requiring a legacy gpu to be inserted.
there are LGA775 (and even AM3 boards) that are capable of booting gpu’s that do not support legacy biosses (like the 5700xt) said boards also seem to be capable of booting without a GPU connected to the system entirely.
also the mac pro 1,1’s for example. this boots fine without a gpu connected entirely too. so it could be used as a GPU less server. same deal if you put in a gtx 1080 ti in the Mac… no boot or post screen. but itll work in windows/mac os once they load.