I have the following problems with the monitor, maybe someone can help. It is connected to a 4090 via DP. Sporadically, the picture goes black for 1-2 seconds every few minutes, no matter what I do. If I disconnect the monitor from the power supply, the problem disappears for a few hours and then reappears. Second problem: as soon as my PC automatically goes into standby, I no longer get a picture on the monitor. This has only been happening for a few days, before everything worked without any problems. I then have to restart the PC and the picture is back. I'm not sure whether it's the monitor or the graphics card.