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    L502X monitor light not off when using external monitor

    Discussion in 'Dell XPS and Studio XPS' started by wenbin, Jul 31, 2015.

  1. wenbin

    wenbin Notebook Enthusiast

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    I mainly use an external monitor (via HDMI) when using my XPS 15 (L502X), however, I noticed an annoying problem when I tried to update the Intel HD 3000 video card driver.

    After I started my computer, when the display was switched to external display, the laptop display was supposed to turn off automatically. However, with the new driver, the laptop display was off, but not completely off, it seems the backlight was still on (see the attached, if cannot see, here is the link https://drive.google.com/file/d/0Bwf8MXlJOZI3djhxeUlmdzA4djQ/view?usp=sharing).

    I found out if I switched to the laptop display then back to external, then the laptop display was off completely.

    The original driver that came with L502X does not have this issue though.

    Anyone has any solutions?

    Info:
    CPU: i7-2630QM
    GPU: GT540M
     

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    wenbin, Jul 31, 2015
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