t3500master Posted September 21, 2015 Share Posted September 21, 2015 Hi Specs: 3 monitor setup (2x 1920x1080, 1x2560x1440). AMD 7950 Sapphire (2x DVI, 1 HDMI, 1 Displayport). OSX Yosemite, Chameleon bootloader 2 monitors plugged into dvi ports, 3rd one running on an active Displayport -> HDMI adapter. All 3 monitors work in windows. The 3rd monitor is recognized by OSX. It shows up in display preferences and I can move my mouse over it, but it is a black screen. If I set the computer to sleep and bring it back, the 3rd monitor works, but I don't want to have to put my computer to sleep right after turning it on. I tried the FB-rotate trick, didn't work. Is there anyone with a similar setup that has any insights into this? Link to comment Share on other sites More sharing options...
TheRacerMaster Posted September 23, 2015 Share Posted September 23, 2015 You probably need to edit your framebuffer. Link to comment Share on other sites More sharing options...
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