08-12-2025 11:05 AM - edited 08-12-2025 11:07 AM
Hi, I just purchased a PA279CRV and am on Mac Studio M4 Max, MacOS 15.6, USB-C cable connection. The monitor is being recognized by the system and all, however the widget isn't working and it says the "functionality is restricted" and a couple of steps to follow to solve the issue. Regardless of having the DDC/CI enabled on the monitor it says that it's not enable or change the cable to HDMI!
The application version: 1.0.3.1
According to the error (The screenshot is attached):
1- I Verified the DDC/CI is enabled in monitor's OSD settings.
2- No, the Mac is M4 Max. Yes, the monitor is connected via the Full Function USB-C (upstream USB cable, port 8 )
3- Yes, the Mac M4 Max does support DDC/CI communication function.
The monitor information:
PA279CRV
MCM104
HDR OFF
3840x2160_60HZ
USB Type_C
Is the latest BIOS/Firmware installed? Yes, it is: