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<< Solved >> 10.15.4 Update - how to disable HDR support?

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Nov 23, 2015
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Motherboard
Gigabyte Z390 Gaming X
CPU
i5-9600K
Graphics
RX580
Mac
  1. MacBook Air
Classic Mac
  1. Power Mac
Mobile Phone
  1. iOS
Hi,

after 10.15.4 update I have terrible bright colors on my LG 27UL650-W (4K / HDR10 / Displayport 1.4). HDR in Display preferences is switched-off. In Monitor's OSD I don't see HDR settings.

How to disable HDR10 support in 10.15.4?

I have RX580 8GB.
 
turn off hdr in setting/display works on my D3219Q
 
Oh god. I just updated to 10.15.4 and my eyes hurt. I can't find the setting to disable HDR, though. Help, please! I have an LG 27UL850-W :X
 
Ah, just found it, sorry lads.
 

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When High Dynamic Range is on brightness is up, when HDR is off colors are bright, contrast is bad and shadows under windows look terrible :/ I can't change anything in monitor's OSD - everything is locked when signal from RX580 is in HDR standard. How to fix it? :/
 
Same problem here, I think it's due to 10.15.4 hdr mismatching
 
No matter whether the checkbox is selected or not, Mac OS sends HDR signal to monitor. Monitor shows HDR label in both cases. Is there any way to change it and get back to SDR under Mac OS 10.15.4?
 
This is not happening in my situation with an LG-27BK85U; I get no HDR label on the monitor OSD after unchecking "High Dynamic Range" in display settings and horrible washed out colors when it's checked but the "HDR" label does show up.
 
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