Option available only in lower refresh rates. I use SwitchResX to set up resolution. This worked in the previous version of macOS. Monitor connected over thunderbolt to DP cable.
MacBook Air (M2)
I rolled back to macOS Monterey and the option is available. No bugs with blanking the main screen when using an external display.
On macOS Ventura 13.0-13.1, I have this option, but sometimes the home screen flickers (tried to disable TrueTone, etc.)
On Ventura 13.2 there is no HDR option at this frequency for my Chinese monitor.
I rolled back to macOS Monterey and the option is available. No bugs with blanking the main screen when using an external display.
On macOS Ventura 13.0-13.1, I have this option, but sometimes the home screen flickers (tried to disable TrueTone, etc.)
On Ventura 13.2 there is no HDR option at this frequency for my Chinese monitor.
I have the same exact issue.
On 13.2, it happens on my 2023 Macbook Pro 14" with M2 Pro. It does not on my 2020 Macbook Air with M1.
External display HDR loss in 3840x2160@144hz after update macOS from 13.1 to 13.2
