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Rapid battery drain when you use Windows 10 on a system that supports hybrid graphics and display to an external monitor

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Symptoms

Consider the following scenario:
  • You use Windows 10 on a system that supports hybrid graphics.
  • You use an NVidia graphics processor unit (GPU) to display to an external monitor. 
In this scenario, you may continue to see rapid battery drain for 2 minutes or more. This occurs even after a video or DirectX application ends and the external monitor is unplugged.

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Cause

This issue occurs because the dwm.exe process continues to reference the discrete GPU (dGPU) even after a video or DirectX application ends and the external monitor is unplugged. Therefore, Windows 10 continues to maintain power to the dGPU. 

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Resolution

There is currently no resolution for this issue on Windows 10. Microsoft is investigating the issue and will update this article when new information is available. 

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Keywords: kb

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Article Info
Article ID : 3099517
Revision : 2
Created on : 9/6/2017
Published on : 9/6/2017
Exists online : False
Views : 321