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Knowledge Base

Active Windows Lose Focus if Ambient Light Sensor is Set to Control Keyboard Backlight on XPS 13

Article Summary: This article provides information on active windows losing focus on the XPS 13. (L321x & L322x)

Table of Contents:
  1. Symptom
  2. Solution

Issue 1:


On the XPS 13 systems, users are reporting that their active window can lose focus. The keyboard functions apply to the active window and may cause typing or actions in an unintended window.

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Issue 2:


The issue has been resolved with Quickset version 11.1.39, A07. This can be located on the support site at:

Quickset version 11.1.39, A07 for Windows 7 64bit and Windows 8 64bit

If you are unable to update the Quickset in your environment, there is also a work-around available. You can disable the setting that controls the keyboard backlight using the ambient light sensor.
Disabling this feature will prevent the ambient light sensor from controlling the keyboard backlight.

Please use the steps below to disable the Ambient Light Sensor Control for Keyboard Backlighting:
  1. Go to "C:\Program Files\Dell\QuickSet"
  2. Open up "BacklitKB.exe"
  3. Deselect "Enable Ambient Light Sensor Control for Keyboard backlighting"
  4. Click OK

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Quick Tips content is self-published by the Dell Support Professionals who resolve issues daily. In order to achieve a speedy publication, Quick Tips may represent only partial solutions or work-arounds that are still in development or pending further proof of successfully resolving an issue. As such Quick Tips have not been reviewed, validated or approved by Dell and should be used with appropriate caution. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in the Quick Tips.

Article ID: SLN171896

Last Date Modified: 03/26/2018 09:49 AM

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