![]() ![]() Switching the Resolution selector in the System Preferences probably made macOS rescan the connection and remember the updated DisplayPort 1.2 capability. What I believe might have happened is, that when I had first connected the display, it was still set to DisplayPort 1.1, and I assume my Mac remembered this. on my Late 2013 mbp I need to use switchresx to get it going (but Ive found that. After that, even re-selecting "Scaled" keeps my monitor at 4k60Hz. I have a 13 2015 MacBook Pro and it drives a 4k monitor at 60hz over. At this time, there is no 60Hz solution for the MacBook. The original setting was:Īnd this setting delivered Choosing "Default for display" changed it to 60Hz. The 80 retail Apple USB-C Digital AV multiport adapter will allow for 4K display at 30Hz across HDMI. adapter that supports 4K60Hz (Amazon, eBay, etc) SwitchResX software to force the resolution. ![]() The second point, however, is a bit weird. Does the 2015 MacBook Pro 15 support a 4k 60Hz display. The first point is pretty obvious, given that DisplayPort 1.1 only supports 30Hz for 4k. I think Apple just put a lid on GPU load to get a smoother graphics and possibly avoid overheating of the GPU inside a laptop. Restart monitor: If you haven’t already, try restarting the monitor after booting up your MacBook.
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