Black screen with Sapphire Pulse Radeon RX 580 8GB on MacPro 2010

[theone29]

Thanks guys, will try a LiveCD tomorrow. Appreciate your help.

 

[h9826790]

Thanks guys, will try a LiveCD tomorrow. Appreciate your help.

Just curious if you try the PRAM reset yet? That may fix the issue

 

[theone29]

I reset the PRAM yesterday but it didn't help. I reinstalled the card today and it works. Weird.

 

[Jounes]

Hi,

My currently set up is a early 2009 Mac Pro Upgrade 4.1 to 5.1.
2x6 core 3.46GHz
64gb 1333GHz ram
Radeon Sapphire Nitro 8G
SSD OS High Sierra

Currently I have 2 DVI Monitors but only one connected (23-inch (1920 x 1080)) from the old set up and since this Card only have one dvi out I'm only running one display. I have order a DP-DVI to run the second but still waiting.

The problem I have is when I connect a HDMI cable I loose the DVI monitor and nothing comes up on my HDMI monitor ( My TV).

Is anyone experienced this issue?

Thanks in advance I'm a newbie to this matter.