![]() ![]() 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. After that, even re-selecting "Scaled" keeps my monitor at 4k60Hz. Turn on your MacBook Air and log in as usual. Turn on your TV and switch it to the correct HDMI input. Attach your Mini DisplayPort-to-HDMI adapter to your MacBook Air via the Lightning port. Connect the other end of the HDMI cable to the Mini DisplayPort-to-HDMI adapter. The original setting was:Īnd this setting delivered Choosing "Default for display" changed it to 60Hz. Plug your HDMI cable into an available HDMI port on your TV. The second point, however, is a bit weird. The first point is pretty obvious, given that DisplayPort 1.1 only supports 30Hz for 4k. Choose "Resolution: Default for display" in my Mac's System Preferences/Displays.Enable DisplayPort version 1.2 in the monitor's menu.On my Philips 328P6V monitor, using a USB-C to DisplayPort cable with my MacBook Pro (15 inch model from 2019 with Radeon Pro 560X), I first was stuck at and couldn't get (even though the cable supports it). ![]()
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