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HD630 4k@60hz black out problem
Hi All, My os is 10.14.2, when I use 1080p monitor, everything is fine except sleep(which I don't care). But after I upgrade to 4k monitor, I can get the 3840x2160@60hz, HD630 @1536m via dp, but it will randomly black out and come back in few seconds. I tried to set dvmt bigger and hd630@2048m...