Scenario #1 proves that the MDP-HDMI adapter, HDMI cable, and Samsung TV all “work” and that the “MDP-HDMI → HDMI cable → Samsung MU7000” combination is in fact capable of displaying 4K and scaled 4K resolutions 60Hz - at least with the MBP with Dual Graphics as the source. 3840x2160 60Hz AND 2560x1440 scaled 60Hz (as well as other scaled resolutions). MBP with IG → Dell-supplied mDP to DP cable → Dell P2715Q: Success. 2560x1440 30Hz works, but is is obviously blurry and not scaled. 3840x2160 30Hz works, but there is no option for anything higher in Display Preferences. MBP with IG → MDP-HDMI → HDMI cable → Samsung MU7000(HDMI UHD Color: OFF): Stuck at 30 Hz. This is my “goal” hardware configuration described above. TV display is garbled, mostly all orange with horizontal strip of garbage on top. MBP with IG → MDP-HDMI → HDMI cable → Samsung MU7000(HDMI UHD Color: ON): Failure. MBP with DG → MDP-HDMI → HDMI cable → Samsung MU7000(HDMI UHD Color: ON): Success. * AmazonBasics High-Speed HDMI Cable, 10 Feet ( ) * Pluggable MDP-HDMI adapter bought Nov 5, 2018 * Samsung UN49MU7000 49” 4K HDR TV, with HDMI UHD Color: ON * “MBP with DG”: Mid-2015 Macbook Pro Retina with Dual Intel Iris Pro + AMD Radeon R9 M370X Graphics, El Capitan * “MBP with IG”: Mid-2014 Macbook Pro Retina with Integrated Intel Iris Pro graphics, High Sierra Please review my test results below before responding. The HiDPI scaled resolutions are important for my application. ![]() My goal: 3840x2160 60Hz AND 2560x1440 scaled 60Hz on MBP Mid-2014 with Integrated Intel Graphics, Macos High Sierra → MDP-HDMI → Samsung MU7000 4K TV.
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