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DPI scaling is changed after resuming from sleep state (S3) in Windows 8.1

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Symptoms

Consider the following scenario:

  • You have a Windows 8.1 system.
  • The system has a feature that allows the system to wake up periodically during sleep state (S3) to update content from applications or perform background tasks.
  • The system is not configured with 100% DPI.
  • You put the system into sleep state (S3.)

In this scenario, after the system resumes from sleep state, the display may be reset to 100% DPI.

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Cause

After the system resumes from sleep state, the Desktop Window Manager (DWM) does not receive a DPI change notification. This results in the DPI scaling to remain at 100% instead of what was previously set. 

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Resolution

To work around this issue, please log off and log back on to reset the correct DPI scaling.

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Keywords: kb

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Article Info
Article ID : 2919043
Revision : 1
Created on : 1/7/2017
Published on : 12/13/2013
Exists online : False
Views : 295