I have done countless web searches, can’t find any real solution.Įverybody just says reset the PRAM/NVRAM and SMC.īut many of the posts/replies I've found are older. The fan speeds and temps are nominal, so it’s not a heat problem. In Energy Saver I have set my Display Sleep and Computer Sleep times to “Never”. I have reset the PRAM/NVRAM numerous times. Monitor will black out again sooner or later (may be 2 hours, may be 2 minutes, may be 2 seconds!!!) sleep the monitor then wake it (shift-cntrl-eject, space bar) sleep the system then wake it (opt-com-eject, space bar) if you were typing in a document and kept typing, the text is there when you get the screen back, so again, “computer” maintained, it was just the monitor went black if, say, a YouTube video was playing, you can still HEAR it, so the “computer” is still working, just no screen Voila! Robust fix, freezing problem never heard from again Flawless until last weeks OS upgrade to Sierra 10.12.3įirst problem was random freezing (cursor would move on screen but no mouse click function)
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