Solved - Displyport issue thread #112 -- monitor goes black after boot up

[ponch007]

I am having Triple monitor fun. I have 3 HP 2311x monitors with a Sapphire 6850 (2 DVI, 1 HDMI, and 1 displayport)

2 DVI connected directly to the monitors
displayport --> DVI conncection with Accell active adapter

On boot up, one DVI monitor and the displayport monitor show the bootup, bios, raid screen and the start of Windows 8 loading up. At this point the screens filcker/ go black. The displayport monitor stays black and the then the two DVI monitors load into Windows. Windows recognizes that there are 3 monitors and so does CCC just no picture on the displayport monitor. The displayport monitor power button is lit up but no picture. I have a second 6850 I want to use for crossfire but that will have to wait until I get the displayport worked out. I can run both cards (crossfire disabled) using 3 DVI ports and the 3 monitors with out any issues. Any ideas?

 

[VulgarDisplay]

I am having Triple monitor fun. I have 3 HP 2311x monitors with a Sapphire 6850 (2 DVI, 1 HDMI, and 1 displayport)

2 DVI connected directly to the monitors
displayport --> DVI conncection with Accell active adapter

On boot up, one DVI monitor and the displayport monitor show the bootup, bios, raid screen and the start of Windows 8 loading up. At this point the screens filcker/ go black. The displayport monitor stays black and the then the two DVI monitors load into Windows. Windows recognizes that there are 3 monitors and so does CCC just no picture on the displayport monitor. The displayport monitor power button is lit up but no picture. I have a second 6850 I want to use for crossfire but that will have to wait until I get the displayport worked out. I can run both cards (crossfire disabled) using 3 DVI ports and the 3 monitors with out any issues. Any ideas?

Turn the monitor off and back on see if it starts working.

 

[jackstar7]

When it happens to me, I switch to an alternate input source and then back to the one I'm using.

 

[ponch007]

I have done both of the ideas mentioned above -- thanks.

 

[p_monks33]

I had trouble with eyefinity , I believe the displayport on many AMD cards puts out too low of a voltage to supply an image at times. I have heard of people getting a new bios with higher output voltage on DP, I never tried, I just gave up and went back to a Nvidia setup.

 

[VulgarDisplay]

I have done both of the ideas mentioned above -- thanks.

Thanks as in they worked, or thanks for nothing?

 

[ponch007]

Thanks as in they worked, or thanks for nothing?

. . . as in thanks for the idea but they did not work.

HOWEVER, i updated the firmware on the adapter and now everything works great, both eyefinity and crossfire!