Windows 10: why are my two monitors acting like one big one?

When i have both my monitors hooked up they act like 1 big monitor.

:)

 

Turning off a monitor acts like disconnecting it

I have two monitors, both connected on DP.

When I turn off my secondary monitor, nothing happens. That's good.

When I turn off my primary monitor, something happens: Windows acts as though it was disconnected, and moves all windows and desktop icons over to the much smaller secondary monitor, messing up window sizes and icon placement.

Turning off a monitor should not act like it's being disconnected. This happened with my previous primary monitor on DP as well. This does NOT happen when I connect either primary monitor (my old one, or the current one) on HDMI.

The solution is NOT to connect my primary monitor on HDMI, because that will disable high fps and HDR.

I'm running the latest Nvidia "game ready" GPU drivers and an up-to-date Windows 10 21H2. My system files are good, says SFC. No viruses or malware either. Just so I don't get that canned response again.

So the question, to be extra super clear: How do I make Windows, when turning off a primary monitor connected to DP, NOT act as if it was disconnected, but leave everything just as it is?

Please advice.

 

Turning off a monitor acts like disconnecting it

Sorry about the SFC commands, I didn't notice when you said you had already executed.

Let's clarify, you have two monitors, as soon as you manually and physically turn off the main monitor, the system understands as if you disconnected the monitor, so it makes your second monitor the main one, putting your entire desktop there, am I right?

System recovery keeping your files and applications solves most system problems, it's hard to say exactly what or how it started, what we know is that it's not normal behavior, and that's why I'd suggest some steps.

This is certainly linked to some kind of system incompatibility with the video drivers.

To clarify, we are just community users, not Microsoft employees.

I suggest that you test from a new user, and if it doesn't solve it, do the recovery keeping your applications and files, only the system image will be reinstalled.

Regards,

Claudeir

 

Overclocking / Undervolting guide for Vega 56 or 64?

Here's a quick laundry list:

List of software to use for overclocking and testing
Examples:
Wattman (and how to find and use it, like an overview, including profiles)
Unigine Valley or Heaven (use this for quick testing while changing settings in Wattman and checking for stability / artifacts) ...just suggesting this
How to monitor cores / mem speeds and temps during testing (I've seen screen overlays, and others using GPUz)

Step-by step overclocking in Wattman
Fan speeds
Power limit
Temp limit
Voltages
Core speeds
Memory speeds