1.    18 Jul 2017 #1
    Join Date : May 2016
    Posts : 21
    Windows 10

    Second monitor detected but blank


    Hi,

    After a windows update, my second monitor has become blank.
    Please see attached image.

    Details:
    - It IS recognized in Display Settings
    - It Is recognized in GeForce Control Panel
    - When taking a screenshot, it shows up as if nothing is wrong
    - It is NOT recognized under Device Manager

    Troubleshooting:
    - Connected a different monitor to the same HDMI slot, with a different HDMI cord, gives the same result. The other monitor is just blank.
    - Updated / clear re-installing GeForce drivers
    - Uninstalled the last Windows Update via control panel, then re-run windows update- Booted in safe mode

    My thoughts:
    Maybe Intel Graphics are missing? The one I downloaded said my "computer doesn't meet the minimum requirements"

    Specs:
    Asus ROG STRIX GL702VS-GB050T
    i7-7700HQ
    GTX 1070
    Win10 64 Creators update


    Any help is appreciated,

    Gilad
    Attached Thumbnails Attached Thumbnails Untitled.png  
      My ComputerSystem Spec
  2.    19 Jul 2017 #2
    Join Date : Jan 2017
    Turku
    Posts : 1,787
    Windows 10 Pro IP Build 16299.19 (Branch: RS3 Release)

    In nVidia Control panel, go to the setup multiple displays tab/page and take a screenshot of that. Also go Windows device manager and take a screenshot of the Displays ( NOT Display Adapters ) tree item expanded.

    Give us those screenshots, then it will be easier to help. I think everything is either working exactly as it should or you have some configuration issues. When I have multiple displays enabled, all my displays except the main display are black (no taskbar nor background image).
      My ComputersSystem Spec
  3.    21 Jul 2017 #3
    Join Date : May 2016
    Posts : 21
    Windows 10
    Thread Starter

    Thanks for replying.
    Here are two screenshots, one is the one you asked for, and the other is trying to compare properties of each monitor. I chose properties that seemed relevant. The only property that had a difference between the two was the upper left one, "Device stack". Marked with red.

    Thanks again.
    Attached Thumbnails Attached Thumbnails NVidia CP & Device Manager.png   Device manager properties.png  
      My ComputerSystem Spec
  4.    22 Jul 2017 #4
    Join Date : Jan 2017
    Turku
    Posts : 1,787
    Windows 10 Pro IP Build 16299.19 (Branch: RS3 Release)

    OK!

    First in Windows display porperties, click Identify Displays. You should see 1 on your laptop and 2 on your external display.

    If nothing shows up then you should go to Intel control panel, there you can setup multiple displays to either extend or clone the main display.

    Click image for larger version. 

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      My ComputersSystem Spec
  5.    22 Jul 2017 #5
    Join Date : May 2016
    Posts : 21
    Windows 10
    Thread Starter

    Slicendice, thanks again for your help.
    Since my graphics card is NVidia GTX 1070, I can't install the Intel graphics control panel. It looks for an integrated Intel GPU.

    Is it possible that I don't have an integrated Intel GPU on the motherboard?

    If not, the solution is to make the system recognize the integrated Intel one.
    Currently, I only see NVidia. If I try to install Intel graphics driver, it get the "your system doesn't meet the minimum requirements for the driver" error.

    Click image for larger version. 

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      My ComputerSystem Spec
  6.    22 Jul 2017 #6
    Join Date : Jan 2017
    Turku
    Posts : 1,787
    Windows 10 Pro IP Build 16299.19 (Branch: RS3 Release)

    I see now that your laptop is running nVidia only, because it's a gaming laptop optimized for performance, thus NO Integrated graphics at all. Sorry for the confusion in my previous post, you can ignore it completely.

    Your rig is a beast, by the way. ;-)

    Since your dual monitor setup used to work before the update, there must be some issues with either Windows or the current drivers.

    Have you tried a simple task as just rebooting the computer a couple of times? I have read reports of second monitor not working when computer has entered sleep state.

    Try that and let me know if it helps.
      My ComputersSystem Spec
  7.    23 Jul 2017 #7
    Join Date : May 2016
    Posts : 21
    Windows 10
    Thread Starter

    Haha I know it's a beast The things that make nerds happy...

    Yea, I've rebooted more than a few times since it's happened. Actually it's been going for over a week (maybe two?).
    I'm pretty sure it's the result of a Windows Update, but when I tried uninstalling the updates, it didn't fix the issue. Also I got the impression it didn't "really" uninstall the updates and returned to the same state as before, only partially.

    I have a strong feeling that resetting the computer (the built in windows function) will fix it, it's just that I tweak every piece of software I have pretty heavily. Recovering all those settings will take a huge amount of time.

    Hey, I really appreciate the effort you're putting in. Thanks again
      My ComputerSystem Spec
  8.    23 Jul 2017 #8
    Join Date : Jan 2017
    Turku
    Posts : 1,787
    Windows 10 Pro IP Build 16299.19 (Branch: RS3 Release)

    Windows 10 is known to have a lot of issues with graphics drivers. For some everything work flawlessly, for others errors come and go. The most interesting part is that 2 completely identical computers can behave very differently. Makes no sense to me. I have had issues with drivers that one minute work, and the next they don't...and no matter what I try, it just keeps NOT working. But suddenly without any changes everything decided to start working again. No errors were generated anywhere. Makes no sense either.

    I understand that you are not that willing to reset whole Windows. I too have a lot of customized settings and apps, that takes a very long time to setup. Though not gaming related, it is still annoying.

    I wish you good luck with getting your beast working again. I am out of ideas. :-(
      My ComputersSystem Spec
  9.    23 Jul 2017 #9
    Join Date : May 2016
    Posts : 21
    Windows 10
    Thread Starter

    That's ok man, much appreciated.

    If you had to reset, what do you think the best way to restore all the settings as easily as possible would be?
      My ComputerSystem Spec

 


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