Hello. My monitor is a KG241Y S. Just yesterday I switched from an HDMI cable to a DP cable. There didn't seem to be any issues at first.
However, I've since been having a weird problem. When I power off my PC and monitor, and then turn both of them back on, the monitor will report "no signal" on the DP input mode.
The GPU's HDMI port will work fine, but none of the DP ports will. The only way I can get the monitor to recognize the input signal from the DP cable is to unplug either the power cable or the DP cable itself, specifically from the monitor-side (unplugging the DP cable from the PC and plugging it back in does not work).
Once the DP or power cable has been unplugged from the monitor and plugged back in, it will continue to work fine, until I once again shut down the PC and monitor. Shutting down just one and then turning it back on will not lead to the issue. Shutting down both, unplugging the monitor and plugging it back in before restarting both will work.
I have tested this on two completely separate PCs. My main system is running Windows 11 and and an Nvidia RTX 4060 Ti. The old PC is running Windows 10 and an an Nvidia RTX 2070. The exact same issue occurred on both systems.
This seems pretty weird. Any possibilities here other than just a defective monitor?
[Edited the thread to add model name to the title]
