Displayport quit working after switching to hdmi for the day.

[Clunker]

I can't get my display port to work. I switched out to hdmi last night just to see if I could see a difference. Now when I try to go back to the display port it says the computer can't find a signal.

It has to have something to do with my GPU. I'm using an RX 480. Do I need to do something in Radeon?

 

[Clunker]

bump, really could use some help.

 

[SgtScream]

Verify input settings on the monitor.

 

[Clunker]

Verify input settings on the monitor.

You mean switch through the input settings on the monitor? I did that. I know how to select the DisplayPort input in the monitor menu. That did nothing.

I noticed that when I hook up the DisplayPort while the computer is running through HDMI that it treats the Displayport as a second monitor. So the port physically works. It's some kind of software thing.

 

[SgtScream]

Do you only have one monitor hooked up to the graphics card? Did you verify that each end of the cable is push firmly into the ports on both the monitor and the graphics card?
When the display port is plugged into the graphics card and you first start the computer, do you see the bios splash screen?

 

[Clunker]

Yes, everything is plugged in and there's only one monitor. The first time I tried to hook it back up to the displayport I saw the bios screen. On subsequent attempts, I did not.

 

[SgtScream]

Hook your hdmi cable back up and verify that still works. Try a different display port on both the graphics card and the monitor. Run out to your local hardware store and purchase another display port cable. If the new cable doesn't work, return it.

 

[Clunker]

I tried both display ports on the GPU. The cable is brand new. I'm confident that it's fine.

 

[SgtScream]

Verify everything. Do you have another computer to test the display port cable?

 

[SgtScream]

I found this:
https://www.youtube.com/watch?v=yvGVX8noUpc
Power off your computer.
Unplug your power cable from the monitor, wait a minute and plug it back in.
Turn your computer back on.

 

[Clunker]

I found this:
https://www.youtube.com/watch?v=yvGVX8noUpc
Power off your computer.
Unplug your power cable from the monitor, wait a minute and plug it back in.
Turn your computer back on.

Yeah, I just tried that a few minutes ago and it worked. I guess the monitor was saving settings or something.