Yes, more details needed. Screengrabs would be nice too.How can you tell?
Suddenly my iMac 27 - 2019 is able to send HDR to an external monitor. Has there been anything said about this? Documentation tells me that HDR compatibility came with iMac 2020.
I can't see why it can not send HDR signal to an HDR compatible external monitor.
All HDR supports are there: iGPU, Vega 48, Thunderbolt port, HDMI 2.0 or DP 1.2 support cable ....
yes, the appropriate hw is there but there has not been any sw support… until now. The Apple site still says iMac 2020 and later for hdr so I am curious and actually a bit worried that they will remove it in sw on the 2019 again.
In my earlier life I used to install Hackintosh OS on PC. Would be kind of poetic if I had to install Windows on Mac HW now.If it's software issue, you can overcom it by installing Windows.