Q: Radeon Sapphire Problem
I'm running latest version El Capitan OS 10.11.6 with a Radeon Sapphire 7950 GPU.
Model Identifier: MacPro5,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.4 GHz
Number of Processors: 2
Total Number of Cores: 8
L2 Cache (per Core): 256 KB
L3 Cache (per Processor): 12 MB
Memory: 48 GB
I have used a 27" Apple thunderbolt monitor for over a year with the Sapphire GPU and everything was really great. However, I wanted two displays. So, I just bought a second Apple thunderbolt monitor and the second monitor won't light-up with the above system. If I try the new monitor by itself it won't work with the Sapphire card. However, the new display will work when it is connected to my Mac Pro laptop running El Capitan. I have done a system disk repair, PRAM clearing and a re-install of the system. I have tried the switch change on the card to no avail. I have contacted Radeon and am hoping they will have a firmware fix.
Any ideas are welcome. Thanks!
Mac Pro (Mid 2010), OS X El Capitan (10.11.6)
Posted on Jul 23, 2016 12:48 PM
Apple introduced the 27-inch Cinema display in 2010 and that was discontinued in 2013. That display has a mini displayport input
Apple also introduced their 27-inch Cinema display with Thunderbolt input in in 21011 and discontinu3d it last month.
Could it be that your old monitor ins the 2-10 model with mini displayport input and then newer one is the one with the Thunderbolt input?
They both look similar.
Posted on Jul 23, 2016 1:31 PM