i have a macbook pro retina with OS X 10.8.4 (12E55) , and i'm connecting it to a dell u3011 monitor using a mini-display to displayport cable , it was working great until today whenever i connect the cable my monitor goes to energy save mode , i thought this was a cable problem so i bought a new one and the problem still remains , i connected to the monitor using HDMI and its working fine , is it a video driver problem?
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are you on battery power ?– RuskesJul 25, 2013 at 23:35
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no , not on battery power– Saif al HarthiJul 25, 2013 at 23:35
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sorry for been late :) so how did you tell your MBP what to do when you plug in external monitor, so it does not run off the build in one !– RuskesJul 27, 2013 at 20:08
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it works out of the box when i connect the cable , no need for configurations– Saif al HarthiJul 28, 2013 at 0:55
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Well,, check your energy save settings n the system preferences anyway.– RuskesJul 28, 2013 at 7:37
1 Answer
Incredibly late answer, but I had the same issue and what worked for me was to reset the NVRAM.