I have a similar issue with a DVI-A/VGA adaptor on this motherboard. I know the monior is capable of sending a valid EDID but the operating system (Ubuntu) fails to get one or gets one that it considers to be invalid. Windows 7 also fails to obtain monitor information. I wonder if it's possible that DVI/VGA adaptors are incapable of passing back the EDID from the monitor. Have you been able to establish that the EDID is succesfully received when you use a different motherboard with the same monitor and the same set of DVI/VGA adaptors?
Yes, it worked before with this adaptor and VGA monitor (Philips 150S4) on an older miniITX Intelboard (DG45FC)
With exactly the same Win7 64 bit OS. If I try Dell 1907 monitor on DVI then it works OK
On DVI and HDMI I have no problems reading the EDID data.
I tried 3 different EDID capable monitors on VGA but it does not work.
I' m sure that is not the DVI/VGA adaptor because the data and clock pins are passed through on the adaptor.
What I did not try yet is special software program to read the EDID data from the monitor.
After I installed the motherboard I did BIOS upgrade to v122 so I do not know if it helps to try older BIOS.
Did you try other VGA monitors or only that one?
I just have one monitor unfortunately - it's a Samsung SyncMaster 2243. On Windows XP with a VGA connection on my old motherboard it is successfully discovered as a "SyncMaster".
I'm on the same version of the BIOS as you, but I did try a couple of older versions. Sorry, but I can't remember which ones I tried now - and a couple I tried were blacklisted and didn't install. One was as old as 2010 and I don't think it fixed the problem. To be completely clear - I can't be 100% sure that the EDID issue *wasn't* fixed by the BIOS downgrade because this is't specifically what I'm trying to sort out. The problem I'm having is a blank login screen in Ubuntu, which I believe is caused by the EDID problem. I can say that none of the BIOS versions I tried fixed the black screen. I'm 99% sure that the OS is failing to get a valid EDID because the log file reports that this is the case.
So, if it is possible to read the EDID though the DVI/VGA adaptor, then it does seem likely to be something to do wlith the motherboard or BIOS. It must be worth trying an older BIOS, but it's not something I like to do very often. As mentioned, I think I tried about 4 versions but 2 were blacklisted.