Monitor won't sleep after inactivity timeout


  1. Posts : 2
    Windows 10 21H1
       #1

    Monitor won't sleep after inactivity timeout


    Hoping someone can help me here as I'm running out of ideas.

    I am running Windows 10 21H1 and having an issue with monitors not going to 'sleep' after the inactivity timeout. This occurred on my previous mainboard and CPU and continued after I replaced them recently.

    I have gone as far as resetting Windows (reset & keep my data) but it still happens.


    - Acer KG271U (Displayport) & Benq Zowie XL2730 (HDMI)
    - 5 minute screensaver set to "blank"
    - 15 minute monitor inactivity to turn monitors off
    - All chipset drivers and everything I can think of updated (monitor drivers included)

    What happens is after the 5 minute timer, the blank screensaver comes on no problem. After the 15 minute timer, the screens wake instead of going to sleep/standby. The 5 minute timer then kicks in again and monitors go to blank screensaver, before again waking at the 15 minute interval.

    I have confirmed it's the sleep timer that is waking the monitors as if I set the screensaver to 1 minute and the screen inactivity timer to 2 minutes - at the 2 minute mark the screens wake.

    If I disable screensaver and just have inactivity timer enabled, the screens will turn black for ~1-2 seconds and then turn on again. They don't ever reach standby mode though where the power light is amber.

    I thought it might have been a USB device causing the monitors to wake before the timer is up, but occurs every time at the 15 minute mark without fail. Never before, only after it tries to put the monitors into standby mode.

    If I use nircmd to run nircmd monitor off - the monitors go to sleep/standby as expected and are only woken when I move my mouse / tap on the keyboard.

    Any ideas?
      My Computer


  2. Posts : 2
    Windows 10 21H1
    Thread Starter
       #2

    After a bit of messing with disconnecting devices and monitors... I've managed to work out what was causing it.

    I have a wireless keyboard and mouse attached to my PC alongside my desktop one for when I'm using a sim racing rig also connected to the PC.

    The "Microsoft Nano Transceiver v2.0 causes" the monitors to wake instead of sleeping. Disconnected it and the monitors started sleeping as expected.

    Not sure why though. I've simply moved the receiver to my switched USB hub so I can turn it off / disconnect it. I'll do a small search why but if I can't find a quick answer I'll leave it like this.

    - - - Updated - - -

    Apparently disabling "Allow the computer to turn off this device to save power" on the USB input device for this transceiver fixes it.

    V strange.
      My Computer


  3. Posts : 297
    Win 10 - 21H1
       #3

    I have a wired x-box controller, that keeps my PC awake. It must be due to the communication method, i.e. constantly sending an updated signal, even if it's the same as previous.
      My Computer


  4. Posts : 179
    Windows 11 Pro
       #4

    I have 2 screens. And I had one monitor that wouldn't sleep correctly. The screen would go black. But the LED panel would stay lit. Not sure if this is your issue. I fixed it by going in the monitor options and turned off auto scanning.
      My Computer


 

  Related Discussions
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 19:03.
Find Us




Windows 10 Forums