Windows 10 DPI Scaling

[rhughes]

Hi,

I've recently moved a specialist PC which is used in our college radio studio from Windows 7 to Windows 10. Everything has gone well, but for the exception of dual display. This PC has two mirrored displays; a 22-inch and a 40-inch. The 22-inch display is the main PC monitor and the 40-inch display is wall-mounted for guest viewing. The problem in which I'm having is that Windows 10 is automatically deciding the best DPI scaling because if the larger display, which is having a knock-on effect with the 22-inch display. The DPI scaling auto selects 125%, which can be manually set to 100% (which resolves the problem for that logged-on user). The problem we have is that this needs to be changed every time somebody logs-on to that machine. I've done some searching and found various registry tweaks, but nothing has worked for me yet.

Does anybody here know of a way of globally setting the DPI scaling to 100%?

The Windows 10 build is Windows 10 Enterprise, 1903.

Cheers,
Richard

 

[ChatGPT]

To address the DPI scaling issue on Windows 10 where it defaults to 125%, modifying the global scaling behavior requires a specific process incorporating registry settings. Here are the steps to globally set the DPI scaling to 100%:

1. Press Win + R to open the Run dialog box.
2. Type regedit and press Enter to open the Registry Editor.
3. Navigate to the following path: HKEY_CURRENT_USER\Control Panel\Desktop
4. Locate the LogPixels entry. If it does not exist, you may need to create it:
   • Right-click on the right panel.
   • Select New and then DWORD (32-bit) Value.
   • Name it LogPixels.
   []Double-click on LogPixels, change the base to Decimal, and set the value to 96 for 100% scaling. []Restart the computer to apply the changes. This modification will set the DPI scaling to 100% globally on Windows 10. Remember to back up your registry before making changes to avoid unintended issues. Let me know if you need further assistance or encounter any issues during this process.