When my monitor is in standby mode, it flashes red, yellow, blue, green. Like a color loop. After some reading (https://rog-forum.asus.com/t5/rog-series-monitors-pg-xg/pg279q-stuck-in-debug-factory-mode/td-p/6803...) & (https://rog-forum.asus.com/t5/rog-series-monitors-pg-xg/pg278q-color-loop-pattern-when-on-standby/td...) I found it was the factory mode, debug, or something like that.
I tried everything in both those posts. Nothing worked and I'm not under warranty to do a RMA. From the reading it looks like its a motherboard issue within the monitor.
What has cured the issue for now is disabling G-Sync in the Nvida Control Panel
Steps:
Open Nvidia Control Panel
Under "Display"
Click "Set up G-SYNC"
Under "1. Apply Following Changes", deselect the box for "Enable G-SYNC, G-SYNC Compatible"
Hit apply.
Hope this helps someone.
Thanks.
