I need to set the monitor to sleep and wake at specific times.

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  1. Posts : 12
    Windows 10
       #1

    I need to set the monitor to sleep and wake at specific times.


    I have a computer system that is used for security and its output is connected to an HDMI over Ethernet box which is connected to 4 other monitors. As it is right now the PC is set to have the monitor on 24 hours a day and the PC must be on 24/7 for monitoring and recording the video feeds, however, the other monitors around the office must be turned on and off manually. The problem is that people often forget to turn them off, so I'd like to shedule them to turn off during the evening times when one one is in the office and back on before anyone arrives in the morning. I cannot use sleep or hybernation.

    I found a Powershell script which can turn off the monitors and I can schedule that to run in the evenings, however, I cannot find anything to automattically turn them back on without user interaction. The Security PC is locked in the IT room and I'd rather not have people going in there to wake the PC's monitors.
    Last edited by Cosgrach; 19 Feb 2019 at 18:58.
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  2. flybynite's Avatar
    Posts : 4,748
    Windows 10 ProWorkstation -- Whichever is highest build number.
       #2

    You could just plug each monitor into a time switch. Set it to turn on at a certain time, and off at a certain time. It is very low tech, but it would work fantastically. https://www.amazon.com/Timer-Switche...ode=6291360011
    If you don't like that find a powershell script to turn it on, and set as a task in task scheduler.
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  3. Posts : 12
    Windows 10
    Thread Starter
       #3

    I have considered the timer switches, however, most of the monitors are hung on walls with the exception of one and the timers could not be hung in the outlets as the oulets are all behind the monitors.

    Also, while I do know enough to build and program a network and all these PCs, I don't know how the scripts work and I cannot program them. I have found nothing about turning on the monitors with a script.

    Here is the script code I found for turning off the monitor:
    powershell (Add-Type '[DllImport("user32.dll")]^public static extern int SendMessage(int hWnd, int hMsg, int wParam, int lParam);' -Name a -Pas)::SendMessage(-1,0x0112,0xF170,2)
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  4. flybynite's Avatar
    Posts : 4,748
    Windows 10 ProWorkstation -- Whichever is highest build number.
       #4

    Let me investigate.
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  5. flybynite's Avatar
    Posts : 4,748
    Windows 10 ProWorkstation -- Whichever is highest build number.
       #5

    I have something which will put the monitors to sleep, and also wake them up but not actually turn them off is this ok. It is in powershell.
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  6. Posts : 12
    Windows 10
    Thread Starter
       #6

    That will be fine.

    Edit: I realize now that the low power mode is what I needed and I don't think that the HDMI over Ethernet will actually pass a command like that anyway.
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  7. flybynite's Avatar
    Posts : 4,748
    Windows 10 ProWorkstation -- Whichever is highest build number.
       #7

    I will work up straight-forward instructions for you. I will post an xml file for Task Scheduler to turn monitors back on. It will take a bit, and I am not guaranteeing anything tonight as I will test first. But I feel very positive about this.
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  8. flybynite's Avatar
    Posts : 4,748
    Windows 10 ProWorkstation -- Whichever is highest build number.
       #8

    Cosgrach said:
    That will be fine.

    Edit: I realize now that the low power mode is what I needed and I don't think that the HDMI over LAN will actually pass a command like that anyway.
    So what are you saying?
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  9. Posts : 12
    Windows 10
    Thread Starter
       #9

    The remote monitors will do the same thing as the base monitor will do, however, the HDMI over Ethernet box is meant for television signals and therefore will not likely pass an advanced command that would actually tun them off. It will defentaly put them to sleep (what I'm calling "low power mode") as I've already tried that.
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  10. flybynite's Avatar
    Posts : 4,748
    Windows 10 ProWorkstation -- Whichever is highest build number.
       #10

    Cosgrach said:
    That will be fine.

    Edit: I realize now that the low power mode is what I needed and I don't think that the HDMI over Ethernet will actually pass a command like that anyway.
    I can create a task which will wake the computer to run it. The task would need to be on all computers though. I don't know how many you have, but you would need to do this for each of them.
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