Unplugging and plugging back in the Thunderbolt cable usually fixes it, although sometimes it also takes the HDR checking/unchecking trick, as well.
![lg 27uk650-w enable hdr lg 27uk650-w enable hdr](https://i.ytimg.com/vi/jQawDhgUTnA/maxresdefault.jpg)
My monitor is connected to my CalDigit TS3 Plus via DisplayPort and the CalDigit is connected to the MacBook via Thunderbolt. Same problem with my LG 27UK650 4KUHD and my 2017 MacBook Pro 15". Just upgraded to Catalina 10.15.4 without googling first whether this would be risky. I've attached two photos I took, one with HDR off showing normal colors but dark shadows and one with HDR on showing the bright neon colors with the blue tint.
#Lg 27uk650 w enable hdr how to#
I've went to the LG website to see if there's a particular calibration file for this monitor and can only find Windows based calibration settings.Ĭan anyone please help point me in the right direction of how to properly get HDR to appear on this monitor? I much prefer the color of HDR disabled, but after seeing how well HDR brightens up shadows, I'd really like to get HDR working properly. I've tried color calibration to see if I could tone down the colors, but it only seems to allow me to change the white point of the monitor itself. If I uncheck it, the display goes back to how it was before. If I look in System Preferences > Display, it shows a new High Dynamic Range check box. It almost appears as if the monitor is 'broke'. The screen is now very blue and all the colors are extremely vivid.
![lg 27uk650-w enable hdr lg 27uk650-w enable hdr](https://i5.walmartimages.com/asr/9ee94b6d-f214-4d5c-9027-56a95e6568e0.d3340790ee1dd8aa8ae7d0961e954a41.jpeg)
Now, in settings of the monitor OSD itself, the ONLY control I have is Brightness. Then, this morning I woke up and went to log in, when my monitor turned on, I saw a HDR logo appear at the top right of my screen (the on-screen overlay from my LG monitor). My monitor looked good, so I never complained. Before that, I was unable to view anything in HDR. I've got a 2019 16" Macbook Pro and a LG 27UK650 4K 10-bit HDR monitor connected.