Windows 10: How to set different display scaling level for multiple monitors in Windows 10

Many users want to use different scaling levels for different monitor when using a dual monitor setup. If you are one of them and want […]

This post How to set different display scaling level for multiple monitors in Windows 10 is from TheWindowsClub.com.

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Custom Scaling per monitor - Windows 10

Hi again Jon, Here is a step-by-step guide on how to set different custom scaling on multiple monitors in Windows 10 (build 1703) - https://www.howtogeek.com/304036/how-to-adjust-scaling-for-different-monitors-in-windows-10/

 

Best way to set monitor scaling

OK, sorry. I thought the whole idea of Option 1 in that tutorial was to allow you to select different scaling levels for individual monitors - 1 or 2 in your case. Are you not presented with 2 different displays to choose from so that you can choose which one you're changing the settings on, i.e., in the turorial: Option 1, Step 7, (sub-step) "2. Select display"?

 

Change DPI Scaling Level for Displays in Windows 10  


SUCCESS!: My issue was with a Surface Pro4 running Windows 10 attached to an external LG Ultrawide monitor using a Display cable, and wanting to have different but compatible dpi on each monitor. I would have to turn off custom scaling and restart every time I booted my system -- essentially, having to double-boot every morning.

The custom scaling was always 'active' after a reboot, and it drove me buggy that I couldn't get it to retain my settings: 200% for the Surface Pro screen and 100% for the Ultrawide screen.

Setting individual scaling for each monitor in the Display Settings resulted in the following reg values: (step 6 in option one)

HKEY_CURRENT_USER\Control Panel\Desktop\PerMonitorSettings\HWP28283CQ9380TKP_26_07D9_EC^A3486C14FBE55CC655B47BB46FC3FEA1\DpiVa lue=0x00000001 (1)HKEY_CURRENT_USER\Control Panel\Desktop\PerMonitorSettings\SDC38530_00_07DF_FB^1C34A1C41AEEF3FF4889352510FEF621\DpiValue =0x00000000 (0)


The key to success was to change the following registry key (using Regedit) from '1' to '0' to disable the custom scaling and enable the per-monitor scaling:

HKEY_CURRENT_USER\Control Panel\Desktop\Win8DpiScaling = 0x00000000 (0)


Now, my per-app settings are still occasionally screwy, as the apps do not properly scale their fonts in ways that are functionally adequate for Win10 and a Surface Pro4, but that's something that can be worked around on an individual basis.