Unable to set UEFI BIOS resolution at 1920x1080

Then, my reply back to the ASRock Support Team was this:

"Hello!

My monitor is Full HD compatible.

The ViewSonic VP2768-4K supports all of these resolutions:

3840x2160
2560x1440
1920x1080 (the one BIOS needs)
1600x1200
1280x1024
1024x768
etc...

So, the "not a Full HD monitor" excuse is invalid.

Please offer a BIOS fix for this issue to your customers!

Thank you!

Best regards!"

Edited by NDRE28 - 17 Nov 2025 at 6:05pm

My reply to ASRock's previous response email was this:

"Hello,

Thank you for your reply.

I believe there is a misunderstanding.

My monitor does correctly pass 1920x1080 support in its EDID.
I verified this using CRU and other EDID tools.
Windows also reads this EDID information and allows 1920x1080, 1440p, and 4K without issue.

Therefore, the monitor is correctly reporting Full HD support.

Since both the GPU (NVIDIA RTX 3080, RTX 5070, and iGPU) and the monitor support 1080p, and since EDID is correct, the issue appears to be within the UEFI display subsystem or EDID interpretation on the X670E Taichi.

Could you please forward this case to the BIOS engineering team for further investigation?
This issue affects multiple GPUs and persists across different monitors, so it would help many users.

Thank you,
Best regards."

Edited by NDRE28 - 18 Nov 2025 at 6:51pm

That is certainly a conclusion but it is incorrect.

I highly doubt ASRock allocates less BIOS ROM to GPU and display support than
other brands. ASRock was only stating that support is tricky given the space
limitation of ROM chips. They didn't even state if they were referring to the
board's BIOS ROM or the GPU's vBIOS ROM. It was a diplomatic answer, as we expect
from a manufacturer. They won't place blame or admit fault, this is normal in the
industry and part of the job rules for any tech staff at any manufacturer. They
would not risk their job and livelihood to tell a customer something that could
result in PR and legal headaches. At least they gave you an idea of where the
problem may lie.

Given you tried the iGPU and your dedicated GPU and both have the same issue
it would appear that your display uses an unsupported GOP and the GPU/iGPU
are not able to verify it's FHD support.

I don't know if it would be any different on another motherboard with the same
CPU and GPU. Basically there is a breakdown between the 3 different elements at
play. The Display, the GPU and the UEFI. A failure/compatibility issue at any
point in the chain will result in the same issue.

After all the time and effort you put in I am sorry you didn't get a solution

Edited by Xaltar - 9 hours 2 minutes ago at 9:06pm