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

    suddenly the screen can't turn on

    Scheduled Pinned Locked Moved Unsolved Troubleshooting
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    • L Offline
      lkthomas
      last edited by

      I am using the following command to turn off and on the screen at the scheduled time, it has been working fine for years until the last few weeks, the screen will be on using --auto command but its blank, if I quickly do the --off again, wait until the screen go to sleep mode itself and run --auto, the screen will start without issue, since this problem is unpredictable, would it caused by hardware issue? would it be the cable or the screen?

      export DISPLAY=:0 && xrandr --output HDMI-1 --off
      export DISPLAY=:0 && xrandr --output HDMI-1 --auto

      S 1 Reply Last reply Reply Quote 0
      • S Offline
        sdetweil @lkthomas
        last edited by

        @lkthomas no other changes?

        Sam

        How to add modules

        learning how to use browser developers window for css changes

        L 1 Reply Last reply Reply Quote 0
        • L Offline
          lkthomas @sdetweil
          last edited by

          @sdetweil sorry what do you mean?

          S 1 Reply Last reply Reply Quote 0
          • S Offline
            sdetweil @lkthomas
            last edited by

            @lkthomas you made no changes to the system before this trouble?

            Sam

            How to add modules

            learning how to use browser developers window for css changes

            L 1 Reply Last reply Reply Quote 0
            • L Offline
              lkthomas @sdetweil
              last edited by

              @sdetweil nope, I was using a 3 years old OS, so I did an upgrade to latest version of the OS on my RPi 3B+, problem still the same.

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              • S Offline
                sdetweil @lkthomas
                last edited by

                @lkthomas do it failed before you upgraded the os.

                Sam

                How to add modules

                learning how to use browser developers window for css changes

                L 1 Reply Last reply Reply Quote 0
                • L Offline
                  lkthomas @sdetweil
                  last edited by

                  @sdetweil yes, it failed even before upgrading the OS, it’s not “upgrading”, it’s a fresh install

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                  • M Offline
                    MyMirror @lkthomas
                    last edited by

                    @lkthomas

                    Give this a try:
                    in /boot/config.txt
                    change

                    dtoverlay=vc4-kms-v3d
                    

                    to

                    dtoverlay=vc4-fkms-v3d 
                    

                    then
                    vcgencmd display_power 1
                    vcgencmd display_power 0

                    BR
                    Jens

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                    • L Offline
                      lkthomas @MyMirror
                      last edited by

                      @MyMirror testing now, but isn’t fkms deprecated already?

                      1 Reply Last reply Reply Quote 0
                      • L Offline
                        lkthomas @MyMirror
                        last edited by

                        @MyMirror I got the same issue using FKMS with “vcgencmd display_power 1” command, it got blank screen after 2 seconds of showing the object on the monitor

                        M 1 Reply Last reply Reply Quote 0
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