Windows 10: Monitor constantly "wakes up" when display turns off

  1.    20 Feb 2018 #1

    Monitor constantly "wakes up" when display turns off

    I have an Intel NUC Skull Canyon (great device). However, I have one constant problem that I cannot seem to solve.

    Whenever the display turns off to power savings mode (Note: I have sleep disabled for the OS, but have monitor set to turn off after 15 minutes), the display will constantly (every few minutes) "wake up" and go from power savings mode to active mode, only to switch back to power savings mode moments later.

    This is annoying, in that it forces me to turn off the monitor at night to sleep, and also because after a couple hours of this constantly waking up, the monitor effectively "crashes" and won't turn back on without pulling the power and recycling the monitor.

    The monitor is an Auria EQ276W, connected via DisplayPort. The Skull Canyon has an Intel Iris Pro 580 Graphics chipset, and i've tried both the default Windows 10 drivers and the Intel specific ones downloaded from Intel.

    This problem isn't new. It's been happening for at least a couple years, through various builds in both the Release and Insider program.

    And here's the truly weird part. The issue only presents itself when Windows has been fully installed. If I install a new build, and let it finish and NOT log in (ie i haven't yet gone through the initial "Hello screen") then the problem does not occur. The monitor goes into sleep mode, and it just seems to work correctly.

    However, after going through the initial Hello screen, the problem returns.

    I have sleep and hibernate disabled. I am running with the High Performance power profile. And again, the OS is not waking up because sleep is disabled.

    Does anyone have any suggestions?
      My ComputerSystem Spec

  2.    20 Feb 2018 #2

    I'm not sure what the deal is with that but, it's been commented on quite a bit.
    Must be a Windows 10 'background activity' thing, cuz I've got the nircmd 'Turn off Displays' thing installed on both W10 and W7; in W7 the displays stay off, in W10 they always turn back on!
      My ComputerSystem Spec

  3.    20 Feb 2018 #3

    As I said, the display turns off again almost instantly. It's like it wakes up, realizes it's supposed to be asleep and goes back to sleep again. It does this every few minutes (5-10).
      My ComputerSystem Spec

  4.    21 Feb 2018 #4

    You can get a power trace by opening an admin CMD and doing:

    powercfg /energy /trace /d c:\temp /duration 120
    Replacing C:\temp with a folder of choice (must exist already) and 120 with the duration you want to trace in seconds. Keep track of the time(s) that the monitor comes on.

    This will create an .etl file you can open in Windows Performance Analyzer. Look at Device Dstate around the times the monitor turned on and see if there are any D-state transitions from your display.

    Click image for larger version. 

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    This will at least tell you if Windows is responsible for the screen turning on or if it's something from the hardware.
      My ComputerSystem Spec

  5.    06 Sep 2018 #5

    sorry for the necro. hopefully you see this mystere. I'm assuming you never found a solution? I found this thread with a generic search for intel displayport keeps waking, and to my surprise, I see we have the same monitor.. This is a recent development for me, and seems to be an intermittent issue. Sometimes, it blips on every minute. Others, it wakes pretty much immediately and incessantly. And every now and then, it's completely problem-free.

    I'm imagining this is just a defect with the monitor. I'm running a multimonitor setup, and none of the other ones are affected (both igpu and not).
      My ComputerSystem Spec


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