New Drivers > 45xx HDMI Works but No Display Port

[AndyMcJ]

I am stuck right now as I have been updating my drivers to make sure i benefit from any enhancements and speed increases in games. As soon as I tried installing any 46xx WHQL driver my duel monitor setup (1 HDMI and 1 Display Port) failed and I was down to only one monitor (HDMI) only. none of the 3 Display Ports work on any of my monitors, I have changed out monitors and cables, but only the HDMI port works - I also get a Resizable BAR error, saying that my BIOS is not compatible for Resizable BAR?
I have a Gigabyte Z790 Aorus Elite AX Ver 1.0 Motherboard. (BIOS V9 latest).
Intel ARC 770 LE 16GB Graphics Card
32GB DDR5 (2 x 16GB) RAM (Hynix 6000)
CPU Intel 13700K i7 CPU
Windows 11 Pro 10.0.22621

If I stay on the older drivers both monitors work fine, however, as soon as I try any driver 46xx and above including the latest driver 4887, only HDMI works and no display recognized by the Intel ARC card/driver on any of the Display Port ports. If I plug the monitors Display Port cable into the onboard Graphics (UHD Graphics 770) the Display Port monitor springs into life, plug it back into the ARC A770 LE 16GB card and it black screens again and turns off because of No Signal Detected.

Can Intel try and find a solution to this issue?

Or if anyone else has the same issue add a comment to make this issue bigger.

[Hugo_Intel]

Hello AndyMcJ

Thank you for posting on the Intel️® communities.  

We understand you have opened a (chat/email/phone) support case with us, and we will continue to help you through that channel now. We will therefore close this community thread. Please, keep in mind that this thread will no longer be monitored by Intel, in case that you have further questions, please open a new topic. 

Thanks for your understanding.  

Best regards, 

Hugo O.  

Intel Customer Support Technician