[SOLVED] Using Displayport locks my monitor to 640x480

[ShyCobra]

Up until now I've used DVI-D but I recently got a new GPU that doesn't support DVI-D unfortunately

Here's what I've tried:

• Using DDU to uninstall my display drivers then reinstalling them
• Tested two GPUs (to the same end)
• Updated Windows
• Updated my mobo bios
• Reset my monitor
• Scoured the internet for answers

Nothing has worked so far and I'm honestly at a loss. I have ordered a new cable to test if mine is defective, but is there anything I can do/check in the meantime?

Here's what it looks like in my windows display settings (I didn't pull a screencap because using this res is torture)

The cable I'm using

The monitor I'm using

 

[boju]

There are many dodgy improperly made DP cables. Vesa even try to run a certification program for companies manufacturing their cable.

Few Vesa verified companies i know of are Accell, Startech and Club3D.

How to Choose a DisplayPort Cable, and Not Get a Bad One! - DisplayPort

DisplayPort makes display cable selection pretty easy. A standard DisplayPort cable is designed to work with any DisplayPort Source device, such as a PC or laptop, and any DisplayPort monitor. This means that a standard DisplayPort cable will work with the very first DisplayPort systems and...

www.displayport.org

Probably is the cable.

 

[ShyCobra]

There are many dodgy improperly made DP cables. Vesa even try to run a certification program for companies manufacturing their cable.

Few Vesa verified companies i know of are Accell, Startech and Club3D.

How to Choose a DisplayPort Cable, and Not Get a Bad One! - DisplayPort

DisplayPort makes display cable selection pretty easy. A standard DisplayPort cable is designed to work with any DisplayPort Source device, such as a PC or laptop, and any DisplayPort monitor. This means that a standard DisplayPort cable will work with the very first DisplayPort systems and...

www.displayport.org

Probably is the cable.

Thanks a lot, this info was super helpful. I had no idea there was a certification for DP cables as I have been using DVI ever since I built my first PC about five years ago. I just picked up a Vesa certified Club3D cable. Thankfully I got this current cable from Amazon so it'll be ezpz sending it back. Take it easy dude.

 

[boju]

Your welcome. Let us know how it goes. Good luck.

 

[ShyCobra]

Your welcome. Let us know how it goes. Good luck.

It was actually an EDID problem. I managed to patch it with an .INF file I extracted but it seems to have broken again.

 

[boju]

EDID issues usually relate to cable/ and or adapter. Very rare is it for a gpu to have trouble identifying a display under normal circumstances using a known working cable or adapter.

I looked at your monitor's manual yesterday and saw it had DP so assumed you're using that. Are you? Not a DP to DVI adapter?

 

[ShyCobra]

EDID issues usually relate to cable/ and or adapter. Very rare is it for a gpu to have trouble identifying a display under normal circumstances using a known working cable or adapter.

I looked at your monitor's manual yesterday and saw it had DP so assumed you're using that. Are you? Not a DP to DVI adapter?

Nah I'm not using an adapter. I finally got it all fixed though, I used a program called Monitor Asset Manager and created a .inf file while using the DVI port from my other GPU. I then switched the cards, and installed the drivers. It initially went back to the crappy resolution but I restarted my computer using the ignore digital driver signature mode and installed the .inf override and it is finally working normally.

 

[boju]

Good work.

Tbh, this is a first for me as well, have never seen something so basic needing bypass measures.

Unless MS automatic driver updates or User Account Control is messing with things.