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If the work is not GPU intensive you might try to manually switch from the Discrete graphic card to the Integrated (Intel HD Graphics). Should work for all 2008-2012, 15-17" dual-GPU MacBook Pros. By installing gfxCardStatus you can do this from the menu bar.


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According to Apple KB : Use your iMac as a display with Target Display Mode you could use Mini Display Port cables for the 2009 & 2010 models, but later models would appear to require Thunderbolt.


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Previous answer all about the hardware. Try SwitchResX for the software side. I've used different versions of this for years and without fail it has always fixed resolution challenges.


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Depends on whether you need the MacBook to be opened or closed. If it can be open, simply dimming the screen all the way will turn off the MacBook's screen. If you'd like it to be closed, there's a free app from the Mac App Store called Caffeine that should do the job. Download Caffeine Allow it to reside in the Menu Bar (on the right side, to the left ...


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My late 2009 iMac works as an external display for my Early 2013 15" Retina MacBook Pro, and for my Mid 2014 15" Retina MacBook Pro, using this cable. Both laptops have Thunderbolt; the iMac does not have Thunderbolt. I don't have a Late 2013 Retina MacBook to test, but it seems reasonable to assume it has the same compatibility.


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Your Mac has DisplayPort 1.1, which does not have enough bandwidth for 3440x1440@60Hz (DisplayPort 1.2 on newer Macs can do 3840x2160@60Hz), and a passive DisplayPort to DVI adapter can only do single link DVI, which is not enough for the advertised external resolution of 2560x1600. Apple sells a Mini DisplayPort to Dual-Link DVI Adapter for $99 (it costs ...


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I have solved this problem with the help of telephone support. Initially I was disheartened after reading all that has been written in this particular article comments section, but luckily I managed to crack this. I had earlier used a samsung with the mac mini, and straight out of the box, it matched with the samsung. It appears that this leaves the mac ...


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I don't have enough points to add comments, but I just had the same issue and found the reply by Dan Grove extremely helpful. This reply is in regard with the step 2 of his proposed solution. It can be skipped by retrieving the monitor's EDID data from SwitchResX. You can download the trial version and, in the monitor tab of SwitchResX preferences you'll ...



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