After several days of troubleshooting with #Asrock support in NL regarding the issues with Displayport 1.4 outputs on my Asus 1070 GPU and X670E PG Lightning mainboard not displaying the UEFI menus or boot logo I have found the following:

1. None of the options in the UEFI menus which might potentially help have had any effect. This includes enabling CSM, disabling the iGPU and many other obscure settings, or which there are legion.

2. With one HDMI connected monitor connected to the GPU (or iGPU) the UEFI menus display correctly

3. If I force my Dell 27" gaming monitor into Displayport 1.1a mode then the UEFI menus and the OS boot logo is displayed correctly (with any other monitors connected remaining blank)

4. My previous platform which was a Gigabyte X570 mainboard with a Ryzen 3600 CPU had no issues with displaying the UEFI or boot logo ect when connected using this monitor in Displayport 1.4a mode

5. I suspect that Asrock may begin to argue that my ASUS ROG STRIX-GTX1070-O8G-GAMING GPU has a compatibility issue but because of (4) I doubt this is the case.

So there we are. If you happen to have a monitor connected to perhaps one of many GPU's with this setup or similar you may also have issues with the UEFI menus or boot logo NOT appearing rendering access to the UEFI settings awkward at best 🤔

I'll update when I have more. Hopefully Asrock Taiwan will take this seriously and investigate to see if there is a UEFI module modification they can implement for full Displayport support across all GPU's 🙃

Asrock support have been very helpful and many of their suggestions could have worked. This is still an excellent motherboard.

#PCSupport #AM5 #Asrock #ASUS #X670E #UEFI #BlankDisplay

Early-adopter tax is in full force for the first batch of AM5 motherboards - Enlarge / The MSI MEG X670E Godlike raises interesting questions, like,... - https://arstechnica.com/?p=1884850 #ryzen7000 #x670e #tech #x670 #zen4 #amd

Early-adopter tax is in full force for the first batch of AM5 motherboards

https://arstechnica.com/?p=1884850

#ryzen7000 #x670e #Tech #x670 #Zen4 #AMD