DVI to VGA Adapter Problem (Not passing EDID information?)

[Bonsai99]

Bought this DVI to VGA adapter from Canada Computers, it was causing the display to show up as a Non Plug and Play monitor in Windows and was not showing the correct resolution options (the adapter seemingly isn't passing off EDID information to the GPU like it should). In addition it was causing the display to flash white bars across the screen during boot.

I did an exchange and still have the exact same problems. There is an option to override EDID settings in Catalyst Control Centre but I haven't had great success with it, when I tried setting it to native res (1600*900) on my brother's display it stretched the picture off screen and left a black bar at the top. Overriding EDID worked fine on my 1920*1080 monitor but still had the white flashes during boot.

I have another DVI to VGA adapter which is working perfectly fine (Showing monitor name under Windows as well as proper resolution) here are pictures of the pinout of the problematic adapter (top) as well as the functional one (bottom)

Did I just happen to get a defective adapter twice or is it defective by design?
It seems like most DVI to VGA adapters on google images have the extra pins that my problematic adapter has.

 

[Suzuki@1473780084@1473780163]

What graphics card are you using? If it has a DVI-I port on the back of it, then you will need a DVI-I to VGA adapter, or a DVI-A to VGA adapter (second picture). DVI-D is only digital, for that to work, you will need an active adapter, which can be very expensive.

 

[Bonsai99]

What graphics card are you using? If it has a DVI-I port on the back of it, then you will need a DVI-I to VGA adapter, or a DVI-A to VGA adapter (second picture). The first picture is a Dual Link DVI-D to VGA--this will not work. DVI-D is only digital, for that to work, you will need an active adapter, which can be very expensive.

https://www.asus.com/ca-en/Graphics_Cards/R9280XDC2T3GD5/

The first adapter has the required analog pins or else it wouldn't have shown anything on the display at all.

In a nutshell I am wondering if the additional (seemingly unnecessary) pins are causing a conflict resulting in the EDID data not being properly passed the GPU

e.g. The GPU is confused by the fact that the extra digital pins are there so it doesn't know what kind of identifying data to expect to receive since all of the pins are populated instead of just the analog pins being populated or just the digital pins.

Like I said it seems like most DVI to VGA adapters on google images have the extra pins that my problematic adapter has so I am trying to figure out whether I've just gotten two broken adapters twice or if these extra pins being there make the adapter defective by design since the one with only the required pins and no extra ones works flawlessly.

 

[Suzuki@1473780084@1473780163]

Does it have 4 holes around the flat pin? It's hard for me to say. If it does, then yes- if your graphics card has got a DVI-I on the back it should work just fine.

What monitor and graphics card are you using?

 

[Bonsai99]

Does it have 4 holes around the flat pin? It's hard for me to say. If it does, then yes- if your graphics card has got a DVI-I on the back it should work just fine.

What monitor and graphics card are you using?

It has the 4 holes around the flat pin populated.

The monitor that I'm using is an Acer S230HLb
Graphics Card is R9280X-DC2T-3GD5

https://www.asus.com/ca-en/Graphics_Cards/R9280XDC2T3GD5/
http://www.newegg.ca/Product/Product.aspx?Item=N82E16824009524CVF (Acer no longer has a product page for the monitor, it was removed awhile back)

Just happened to come across this information as well, must have missed it during my research of this problem
https://en.wikipedia.org/wiki/Digital_Visual_Interface
"Since the DDC can only support one EDID, there can be a problem if both the digital and analog inputs in the DVI-I port detect activity."

Still have no idea if the extra pins would cause this issue on their own or if the adapter would have to be incorrectly wired as well so that it incorrectly detects activity on both inputs at once.

 

[Suzuki@1473780084@1473780163]

The extra pins just allows for a higher bandwidth, i.e resolution and refresh rate. A DVI-I dual or single link will work just fine, because it carries both analog and digital.

 

[Bonsai99]

The extra pins just allows for a higher bandwidth, i.e resolution and refresh rate. A DVI-I dual or single link will work just fine, because it carries both analog and digital.

Alright but the adapter with extra pins is causing the problems that I described above, so is your guess that I happened to get another faulty adapter after exchanging the first one?