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    A New Chapter for MagicMirror: The Community Takes the Lead
    Read the statement by Michael Teeuw here.

    Switching the Magic Mirror display on/off

    Scheduled Pinned Locked Moved Unsolved Troubleshooting
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    • S Do not disturb
      sdetweil @Klinge
      last edited by

      @Klinge which MMM-HomeAssistant module are you using?
      there are 3

      in the MMM-HomeAssistant module folder, do

      git remote -v
      

      so we can see which one you are using

      Sam

      How to add modules

      learning how to use browser developers window for css changes

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      • S Do not disturb
        sdetweil @Klinge
        last edited by

        @Klinge at least this one
        https://github.com/ambarusa/MMM-HomeAssistant

        provides config options for the on/off commands

                monitorOnCommand: 'xrandr -d :0 --output HDMI-1 --auto --rotate right',
                monitorOffCommand: 'xrandr -d :0 --output HDMI-1 --off',
        

        Sam

        How to add modules

        learning how to use browser developers window for css changes

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        • H Offline
          Hilt
          last edited by Hilt

          What you’re describing in Home Assistant sounds like a switch, not a button. They have different behaviours. This is important for what follows.

          Initially I had our mirror turning on/off on a schedule using crontab. But when I rebuilt it recently, I too wanted some Home Assistant integration to make this a little more intelligent ( turn on/off with the alarm system for e.g. )

          I went a different route and installed an SSH integration in Home Assistant ( there are enough modules on the long suffering Pi 3B+ ! )

          Using this integration, any SSH command can be turned into button like so :

          Screenshot (1).png

          If you’re using a Pi, you can use the following in the configuration options of the integration :

          Screenshot (2).png

          The actual code for your ease of use :

          - command: sudo shutdown -h now
            name: Turn off
            key: turn_off
          - command: sudo reboot
            name: Restart
            key: restart
          - command: vcgencmd display_power 0
            name: Turn Screen Off
            key: turn_offf
          - command: vcgencmd display_power 1
            name: Turn Screen On
            key: turn_on
          

          That vcgencmd display_power command should work on pretty much an HDMI monitor

          This results in a bunch of buttons that you can use in your Home Assistant automations

          Screenshot (3).png

          S 1 Reply Last reply Reply Quote 0
          • S Do not disturb
            sdetweil @Hilt
            last edited by

            @Hilt vcgencmd no longer works on Bullseye (last release) or Bookworm (this release) of PI os

            @Hilt said in Switching the Magic Mirror display on/off:

            vcgencmd

            Sam

            How to add modules

            learning how to use browser developers window for css changes

            H 1 Reply Last reply Reply Quote 0
            • H Offline
              Hilt @sdetweil
              last edited by Hilt

              @sdetweil

              Thanks for the heads up Sam.

              I’m currently running Bullseye with kernel 6.1.21-v7+ and it still works in this revision. Admittedly I didn’t try with Bookworm as when I originally tried it ( Bookworm ) at launch, the VNC server had gone away on account of Wayland and alternatives were…interesting back then ( didn’t do too much research at the time to be fair ). So for this rebuild I just stuck with Bullseye.

              2 quick questions for my own edification :

              1. For Bookworm. Could the commands I listed for vcgencmd simply be replaced with wlr-randr --output HDMI-A-1 --on and wlr-randr --output HDMI-A-1 --off ( assuming HDMI port 1 ) for the same result ?

              2. Another option according the the almighty but not always correct ChatGPT is to switch to X11 and then vcgencmd would work as expected ?

              I have a spare Pi I could test on. I won’t however have time to tinker in the next few weeks. Curse having to adult !!

              Really appreciate your input

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              • S Do not disturb
                sdetweil @Hilt
                last edited by

                @Hilt said in Switching the Magic Mirror display on/off:

                Another option according the the almighty but not always correct ChatGPT is to switch to X11 and then vcgencmd would work as expected ?

                no, this is incorrect, as vcgencmd is no more , altho I see it on my bookworm system , it is not supposed to support display anymore…

                as for point 1,
                when running wayland you can use the wlr-randr command
                when running x11 you can use the xrandr command

                I don’t know the specifics of what each command needs.

                all linux commands come with help built in

                wlr-randr --help

                many provide more detailed info in the man page
                man wlr-randr
                I see the man page for vcgencmd is there too

                Sam

                How to add modules

                learning how to use browser developers window for css changes

                H 1 Reply Last reply Reply Quote 0
                • K Offline
                  Klinge
                  last edited by

                  First of all, thank you for your tips.

                  So, I use the module from ambarusa

                  origin  https://github.com/ambarusa/MMM-HomeAssistant/ (fetch)
                  origin  https://github.com/ambarusa/MMM-HomeAssistant/ (push)
                  

                  And use the following config

                                     module: “MMM-HomeAssistant”,
                                     config: {
                                          mqttServer: “mqtt://192.168.100.xx”,
                                          mqttPort: 1883,
                                          username: “mqttxxxx”,
                                          password: “xxxxx”,
                                          deviceName: “MagicMirror xxxx”,
                                          autodiscoveryTopic: “homeassistant”,
                                          monitorControl: true,
                                          brightnessControl: true,
                                          moduleControl: true,
                                          monitorStatusCommand: “xrandr --query | awk \”/Screen/ {print ($8 > 320) ? ‘true’ : ‘false’}\“”,
                                          monitorOnCommand: “wlr-randr --output HDMI-A-1 --on --transform 90”,
                                          monitorOffCommand: “wlr-randr --output HDMI-A-1 --off”,
                  //                      monitorOnCommand: “xrandr -d :0 --output HDMI-1 --auto --rotate right”,
                  //                      monitorOffCommand: “xrandr -d :0 --output HDMI-1 --off”,
                                          pm2ProcessName: “mm”,
                                      }
                  

                  As you can see, I use wlr-randr for on/off and rotate the monitor 90 degrees when switching it on.

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                  • K Offline
                    Klinge
                    last edited by

                    I think you’re right in calling it a switch. You can see it clearly in the screenshot at the arrow.

                    Zwischenablage01s.jpg

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                    • H Offline
                      Hilt @sdetweil
                      last edited by

                      @sdetweil

                      Many thanks for the input. I’ll have a tinker when I find a gap and explore the commands and their respective soft switches. Just so that I’m future proof !

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