Windows 10: Setting lock screen DPI different from the rest

Hi,

I use a custom DPI of 150% . But I'd like to keep only my lock screen at its 100% DPI/zoom.

Is that possible?

Please help..

:)

 

Dual Monitor Issues

Screensaver: What DPI is your system set to use? Sounds like that particular screensaver might not be DPI-aware. Does a different screensaver work correctly?

Lock Screen: Yes, that's by design. No, not at this time.

 

Dual monitors with different DPI settings do not give correct scaling

Hello Jayant and thank you for your reply.

As described in the threads you provided I updated my graphics drivers (though they were already on the latest version) and tried changing my screen resolution back and forth. Neither helped the situation sadly.

The solution that suggested editing the registry seems to be aimed at disabling DPI scaling for specific applications. However, this is not my aim as disabling DPI scaling would indeed remove blurring but text would stay unreadably small.

The Windows Dev Center article did confirm two things for me.

• There are DPI-unaware applications which will be scaled up by Windows making them appear blurry. This behaviour is correct as described in the Windows Dev Center article and as seen in the first image of the following article:
  
  http://www.anandtech.com/show/7939/scaling-windows-the-dpi-arms-race/3 These applications are not the problem I am describing, we cannot expect Windows to magically show DPI-unaware applications in high detail. An example of a DPI-unaware application is
  Sublime Text 2 and the older version of VLC as shown in the AnAndTech article.
  
• There are DPI-aware applications which experience blurring when there are two differing DPI scaling settings present. The application blurring occurs on the screen with the lower DPI scale. I do not know the behaviour when there are more than two screens
  with more than two differing DPI scales present. Examples of DPI-aware applications are Google Chrome and Visual Studio 2015.

A little experiment

Lets look at an example of bullet point 2 using screenshots of Google Chrome rendering a webpage. The screenshots were made using the Windows screenshot functionality and cropped in paint.net.

Image 1 - Correct DPI/scaling on HD screen

The first image is an example of proper DPI on the 1920x1080 (HD) screen. The 3840x2060 (UHD) is also connected, but DPI scaling is disabled (set to 100%) for both screens. In this scenario everything displays as expected, but let me remind you that this
is not a solution because at 100% DPI scale text on the 27" UHD screen is too small, as mentioned)



Image 2 - Incorrect DPI/scaling on HD screen

This second image taken from the same HD screen is clearly more blurry than the first image. In this scenario the DPI scaling for the UHD monitor has been set to 150% (and the user account has been logged out and in as recommended by Windows when changing
the setting). It appears that the scaling for the UHD monitor somehow affects the render on the HD screen, despite it having in fact the same settings as in the previous image. The blurring effect occurs in other applications like VS2015 and Windows Explorer
as well.



Image 3 - Correct DPI/scaling on UHD screen

The third and last screenshot is taken with the same settings as image 2, but from the UHD screen. As expected this image is larger because Windows requested from Google Chrome to render 150% pixels for the same area of the application to keep my eyes happy.
This and the first image assert that Chrome is a DPI-aware application which can indeed render sharp images at different DPI scales.



An interesting side note is that DPI-unaware applications do render at the prober 100% DPI scale without blurring when displayed on the HD screen with the settings used in image 2 and 3.

I hope this clears up what my concerns are because I can't get much more detailed than this.