Q: Third monitor wont work with Eyefinity anymore
I am trying to run 3 monitors on my ATI HD 5770
I have two computers that for years have worked with multiple monitors fine… until recently. Through all of my OS updates they continued to work. I can’t remember exactly when each card stopped powering its third monitor. Each of my “third monitors” would come on periodically until they have all eventually stopped.
All monitors work fine as I juggle cables and adapters each one refreshes and comes on but not all of them at same time.
Here is what I have available for troubleshooting.
I have two the Mac Pros listed below. (OS 10.11.6) on one and (OS 10.7.5) on the other.
Each tower has (2) 5770 cards installed that each have one DVI and 2 mini ports.
So I have a total of (4) cards and this is counting the new one I got on ebay last week.
I have (6) 23” LG E2350V monitors and (3) 22” ACER monitors
All my cables are active and I have several active adapters
I have just bought some extra passive and lots of extra active adaptors to experiment and trouble shoot with.
Thank in advance for help and time!
Mac Pro, OS X El Capitan (10.11), 3.46GHz (5,1) 6 core (48G RAM 1333)
Posted on Aug 11, 2016 10:22 PM