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  1. Joined : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 7,979
    Windows 10 IoT
       05 Apr 2016 #31

    On my PC, that is running 3 screens. The monitor I set as main display is the one that stays on when I select PC Only. If I change what screen is the main display, that screen becomes the one that stays on. The numbers have nothing to do with it. I've done this several times, the results are the same each time.
    The screen numbers I get for each monitor depend on how many monitors I have connected and what ports I have them connected to. I can't change what number they get from Windows.
      My System SpecsSystem Spec


  2. Joined : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 7,979
    Windows 10 IoT
       05 Apr 2016 #32

    Guys, if your system is doing things different from mine, it must be due to the Video card BIOS? All I can say is how things are working for me. As far as I know, there is no way to change the number Windows assigns to the monitor without physically changing what port its plugged into on the video card. I have not seen or found any menu option in Windows to change it with a mouse click. Laptops may behave differently than a desktop does, they have one monitor built in and wired directly to the motherboard. The + P GUI looks to be geared to laptops more than desktops.
      My System SpecsSystem Spec


  3. Joined : Jun 2015
    Posts : 40
    Windows 10
       06 Apr 2016 #33

    LogicalApex said: View Post
    You're not understanding the issue the OP is asking for a resolution to... I stumbled in from a Google search so that lead me to this thread where I've read it all to see if a solution was found and all I got was you constantly telling the OP they are wrong... They aren't...

    Additionally, the monitor your UEFI shows up on has no bearing on what monitor Windows will mark as your "Monitor 1". My board boots with my UEFI showing on my primary screen, but Windows considers that same screen to be "Monitor 3" so it isn't the screen selected if I use Windows + P and set "PC Screen Only", but it will show if I select "Secondary Screen Only" (entirely skipping over "Monitor 2").

    The issue is simply this:

    Is there any way to determine what screen is set as the "PC Screen Only" and "Second Screen Only" when Windows + P is used for fast display toggling?

    PC Screen Only appears to be set to "Monitor 1" with no way to change this...

    "Make this my main display" has no correlation to what screen Windows + P "PC Screen Only" will use.
    Man! I'm so glad you said that. Sometimes it seems as if they think we are idiots! My computers, normally, go as I set them. Although the screen ID is always backwards. If I choose the PC monitor as primary, the ID will be #2. If I choose the external monitor as primary, the PC monitor is still #2. I can live with that, but when I try to extend from the KMC Video app on one system it gives the error message that 'it can't play on the primary monitor'. On this particular system, it gives that message regardless.
      My System SpecsSystem Spec


  4. Joined : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 7,979
    Windows 10 IoT
       06 Apr 2016 #34

    Unsubscribes from thread. I hope you solve your issue but from this point on I wash my hands of the whole thing.
      My System SpecsSystem Spec


  5. Joined : Jun 2015
    Posts : 40
    Windows 10
       06 Apr 2016 #35

    alphanumeric said: View Post
    Unsubscribes from thread. I hope you solve your issue but from this point on I wash my hands of the whole thing.
    Really? Wow..., now what do we do?

    Please....
      My System SpecsSystem Spec


  6. Joined : Aug 2016
    Posts : 1
    win10
       27 Aug 2016 #36

    I found this topic via google and wanted to shine some light on this for you guys.

    the way windows assigns monitors has nothing to do with anything anyone is saying here and this thread has given me a lil laugh.

    Windows asigns monitors in the order they are plugged in. this means if you plug them all in at once and turn on it just uses whichever port comes first in its list as it uses them. The lazy long way to fix this is to plug in one monitor at a time in the port you want it to be in and in the order you want it to be on. so turn off pc and plug in the monitor YOU WANT to be #1 into whatever port you wish then turn on PC. that monitor is now #1 since it is the only 1 of course. so turn off then plug the second screen you want to be #2 into whatever port you want it to operate on and turn on pc, it should now be #2. do this for the next one and so on. It works this way simply because windows has a registry entry where it records the monitors plugged in. if you dont want to do all that turning on and off then you can just delete the monitors from the registry and then plug and unplug them in the order you want as described below.

    go to the registry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\D ISPLAY there, find the monitors and delete them in the enumeration, you will probably have to right click and set the permissions (even when your admin) to "everyone" to delete these items. once you do that, physically disconnect the monitor wire you want to call 2 or Second, and when you boot up again, as the primary monitor re-installs it will be #1, and your obsessiveness over the number will be finished.

    [ POST EDITED BY MODERATOR]
    Last edited by essenbe; 27 Aug 2016 at 23:55.
      My System SpecsSystem Spec


  7. Joined : Jun 2015
    Posts : 40
    Windows 10
       29 Aug 2016 #37

    Interesting. I'll test that solution this afternoon.
      My System SpecsSystem Spec


  8. Joined : Sep 2016
    Posts : 1
    Windows 10
       10 Sep 2016 #38

    PIRATEorNINJA said: View Post
    and your obsessiveness over the number will be finished.
    ... It's not obsessiveness, I have the same problem on my Windows 10 desktop PC.

    My Asus monitor is #2 and set as the PRIMARY DISPLAY. The system boots on this display and most programs work fine.

    My LG television is #1. My TV is usually off when I'm using my PC, but many programs launch incorrectly on the LG ... Then I have to turn on my TV, wait for it to start up, change to the PC input, and drag the window over to my PRIMARY DISPLAY, and turn the TV back off. Very annoying.

    The numbering is the issue! Most programs will correctly launch by default to the PRIMARY DISPLAY, but many programs will launch by default to display #1, regardless of whether its defined as the primary display or not.

    EDIT: At least WINDOWS KEY+SHIFT+(LEFT/RIGHT ARROW) will move the active window
    Last edited by PRisoNR; 16 Sep 2016 at 03:47.
      My System SpecsSystem Spec


  9. Joined : Jun 2015
    Posts : 40
    Windows 10
       10 Sep 2016 #39

    Now, that is true. There ARE occasions when the apps will open on the wrong screen. Especially "Settings". It seems that 9 out of 10 times, it opens on the #1 screen, when #2 is my main screen. Numbering makes all the difference is some cases.
      My System SpecsSystem Spec


  10. Joined : Sep 2015
    Posts : 5
    W7
       11 Oct 2016 #40

    PIRATEorNINJA said: View Post
    go to the registry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\D ISPLAY there, find the monitors and delete them in the enumeration, you will probably have to right click and set the permissions (even when your admin) to "everyone" to delete these items. once you do that, physically disconnect the monitor wire you want to call 2 or Second, and when you boot up again, as the primary monitor re-installs it will be #1, and your obsessiveness over the number will be finished. [ POST EDITED BY MODERATOR]
    Hi, I hope it is not too late to ask... I have the same issue as discussed, however I cannot delete the two items, although I gave full control to everyone, please see my screenshot. Also, do I have to delete both folders DELA05D and DELA0DB or shall I also delete the one called 'Default Monitor' ? Your advice is much appreciated. Thank you! Alex
    Attached Thumbnails Attached Thumbnails Capture.PNG  
      My System SpecsSystem Spec


 
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