drp412 Posted October 5, 2015 Share Posted October 5, 2015 I have installed new OS and now my dual display is stopped working. Before in Yosemite, it was working great. I have Acer's 22" touch screen and old dell 19" monitor. I have also installed new nividia graphics driver (346....) and when I see about my mac, I can see my graphic card. When I start my computer, it starts on my old monitor and then it swtich to my new monitor and old monitor goes to sleep. I tried all flags but still no luck. I cant able to select another monitor from the display preferecne. Any help appreicated.. Thanks Link to comment Share on other sites More sharing options...
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