1. when the Mac enters sleep or standby mode, the monitor is irregularly awakened, displaying no signal input source (the Mac itself does not output a signal), and the monitor goes back into standby mode, repeating this cycle.
2. After enabling game mode on the G80SD, connecting the Mac to the G80SD at a variable refresh rate of 240Hz results in an issue where the monitor cannot be awakened. For instance, when I press the keyboard, the G80SD powers on but displays no signal input; I have to press the keyboard again for the G80SD to recognize the input source and show an image. This problem occurs with both HDMI and DP connections. If game mode is not enabled, a single press of the keyboard successfully wakes the monitor.
My Mac has been updated to macOS 15.4, and these three issues still persist. I have never encountered such problems with other monitors like the 32GS95UE or AW3225QF. Personally, I suspect there is an issue with the compatibility of the G80SD with Mac. The firmware version of my G80SD is also the latest 1313.2.
“when the Mac enters sleep or standby mode, the monitor is irregularly awakened, displaying no signal input source (the Mac itself does not output a signal), and the monitor goes back into standby mode, repeating this cycle.”
This issue is not an isolated case, and there are also feedbacks from other users on Reddit.
