Question DisplayPort Reconnect Causes Theme Color Fill, Black Screen & Freeze (Windows 10)

[Zurt]

I have two monitors connected to my PC:

• Main display: ASUS ROG PG248Q (used for both PC and consoles)
• Secondary display: LG monitor (PC only)

The main display is connected to my PC via DisplayPort and to my consoles via HDMI. I frequently switch the input on the main display between HDMI (for consoles) and DisplayPort (for PC).


This used to work seamlessly—switching back to DisplayPort would immediately restore my Windows session without issue.

Now, on Windows 10, when I switch back to DisplayPort:​

1. The screen first fills up with my Windows theme color.
2. Then both screens go black.
3. Windows freezes briefly.
4. Then I hear the “device connected” sound, and everything returns to normal.

Nothing in my hardware setup has changed.

Specs:​

• Main Monitor: ASUS ROG PG248Q
• Secondary Monitor: LG monitor
• OS Build: 19045.5608 (Windows 10)
• GPU: RTX 2080 Ti (Driver 32.0.15.7260)
• CPU: AMD Ryzen 7 5800X3D
• Motherboard: ROG Crosshair VI Hero

Has anyone else experienced this? Any ideas on what might be causing it or how to fix it?

 

[Ralston18]

Look in Update History for any failed or problem updates.

Look in Reliability History/Monitor for any error codes, warnings, or informational events being captured at the times you switched ports. Look in past history and current history - any differences?

Generic:

Run "dism" and "sfc /scannow". Could be some buggy or corrupted files that need to be fixed.