I've updated to OS X 10.15.4 on a MBP 16".
The built-in display works fine but my external monitors (LG 27UK850 and BenQ EW3270U) both of them connected via USB-C have big issues in colour terms.
The image is "corrupted" tinted purple and white colours a little blue.
Some one has similar problems?
Thanks!
The HDR box now appears in system preferences / displays. I'm fairly certain it wasn't showing up right after the update, so if you don't see it, try restarting, and unplugging/replugging things.
If the HDR box is checked, it limits the menu options available on the LG's built-in system. For me, unchecking this box and resetting the LG display seems to have returned things to normal.
Just to verify - the issue is not fixed in 10.15.5 for me. This is still an issue.
I have the same issue with to LG 27UK850, it doesn't matter what cable i have connected, USB C to display port, USB C to hdmi or USB C to USB C, need a fix soon.
Thanks for doing this.
Has anyone tried Big Sur? Has the issue been resolved?
BTW - updating to 10.15.6 does NOT resolve this.
This solution worked for me too. Not really smart, but okay.
:-)
Mac Mini 2018
LG 38WK95C
Latest macOS
I am having a similar problem with 10.15.7 on a 2017 macbook pro. Has anyone found a sollution?
I had the same problem with my 2017 MBP 2.9 Quad i7, Radeo Pro 560 4GB with my LG 27UK850-W monitor. Running 10.15.4 (19E266). Colors were waaaay off, super neon and painful to look at.
Turned off the HDR setting and it's back to normal.
Thanks Orellana!
Yes, for me the same color issues. In my case there are two external LG27UK850 with pale colours and bright shades of red. So what's the solution? OS-downgrade?/Monitor-firmware update?/New Cables? or worth waiting for fixes?
Oh no, it's so easy to fix. In my case I simply turned off the HDR checkbox within the Monitor system settings. :-)
Not a perfect solution I'm afraid, but a solution that works. For me.
I've custom settings on my LG27UK650 for brightness, contrast, warmth etc, which only has DisplayLink output. It played nicely with my previous Mac Pro (2012) desktop. I've recently moved to a Mac Mini and like others found the screen horrendously bright and the only option being to keep toggling the High Dynamic Range checkbox in Displays a number of times until the right mode sticks.
By accident I discovered a solution that works for me... I hope it works for you!
From a cold boot, let the Mac finish starting up until you are presented with the ultra vivid HDR screen.
Use the under-monitor control toggle to turn the LG monitor off.
Then turn it back on again.
Back to my chosen settings!
Tested on:
Mac Mini 2018
Catalina 10.15.6
LG27UK650 monitor
I solved this issue by connecting my monitor to my computer with a thunderbolt cable. If your monitor has a thunderbolt3 connection try using that. But note that any usb-c will not work, it needs to be thunderbolt3.
As Orellana said: you do it in System Preferences->Displays
Same issue as others here, I have a LG 27UK850 and I'm running 10.15.4
Shutdown, unplugged monitor, restarted and then I could see the HDR option under Displays.
I do not have the HDR button turned on. Still the same problem...
Also having this issue. Unchecking HDR seems to fix it for now.
OSX 10.15.4 colour problem on external monitors
