Tristana Posted May 22, 2020 Share Posted May 22, 2020 (edited) Hello- I'm having an issue where toggling HDR on/off in Catalina isn't being reported to my new LG 27GN850-B monitor. This is a problem as with HDR enabled in the monitor, I can only adjust brightness/sharpness & I can't seem to use the sRGB profile built into the monitor. There seems to be no way to manually disable HDR on the monitor. Toggling HDR on/off in Catalina *does* affect the image; it's washed out with HDR on, but hyper-saturated with it off. The monitor, however, thinks it's getting an HDR signal either way. I am connected via a DisplayPort & my RX580. Any ideas? Thanks! System: Quote macOS 10.15.4 High Sierra core i5 7600k Kaby-lake @ stock 3.8ghz ASRock Z270M Pro4 16 GB DDR4 2400mhz (Mushkin 2x8gbs) Sapphire Radeon Pulse RX 580 8GB GDDR5 be quiet! 500w PSU MOTU Ultralite mk4 USB audio interface Kexts: Quote Kexts: AppleALC.kext FakePCIID_Intel_HD_Graphics.kext FakePCIID.kext FakeSMC.kext IntelMausiEthernet.kext Lilu.kext USBInjectAll.kext WhateverGreen.kext XHCI-unsupported.kext Edited May 23, 2020 by Tristana Link to comment https://www.insanelymac.com/forum/topic/343933-solved-hdr-disabled-not-reported-to-lg-27gn850-b-monitor/ Share on other sites More sharing options...
Tristana Posted May 22, 2020 Author Share Posted May 22, 2020 alright, the system is trolling me. I toggled it on/off a few more times and the monitor realized that it wasn't getting an HDR signal eventually. Any ideas on a more permanent fix? I'm actually fine never using HDR with this monitor, but it'd be nice to have it so that toggling it... works as expected. Link to comment https://www.insanelymac.com/forum/topic/343933-solved-hdr-disabled-not-reported-to-lg-27gn850-b-monitor/#findComment-2723364 Share on other sites More sharing options...
Tristana Posted May 22, 2020 Author Share Posted May 22, 2020 In waking the monitor from display sleep, it thinks it's HDR again. :-/ Link to comment https://www.insanelymac.com/forum/topic/343933-solved-hdr-disabled-not-reported-to-lg-27gn850-b-monitor/#findComment-2723371 Share on other sites More sharing options...
enlaid Posted May 23, 2020 Share Posted May 23, 2020 It's Catalina 10.15.4 bug not related to hackintosh: https://discussions.apple.com/thread/251218978 https://discussions.apple.com/thread/251213356 Generate display override file using Hackintool or use script: https://gist.github.com/adaugherity/7435890 Link to comment https://www.insanelymac.com/forum/topic/343933-solved-hdr-disabled-not-reported-to-lg-27gn850-b-monitor/#findComment-2723444 Share on other sites More sharing options...
Tristana Posted May 23, 2020 Author Share Posted May 23, 2020 4 hours ago, enlaid said: It's Catalina 10.15.4 bug not related to hackintosh: https://discussions.apple.com/thread/251218978 https://discussions.apple.com/thread/251213356 Generate display override file using Hackintool or use script: https://gist.github.com/adaugherity/7435890 Awesome, thank you! I somehow didn't find this in my searching (though perhaps because I was using the 'Hackintosh' keyword when it's a general macOS problem). The kext made by hackintool seems to be working. Link to comment https://www.insanelymac.com/forum/topic/343933-solved-hdr-disabled-not-reported-to-lg-27gn850-b-monitor/#findComment-2723476 Share on other sites More sharing options...
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