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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 Jan 9, 2024, 12:19 AM

    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 Jan 9, 2024, 12:22 AM Reply Quote 0
    • S Offline
      sdetweil @lkthomas
      last edited by Jan 9, 2024, 12:22 AM

      @lkthomas no other changes?

      Sam

      How to add modules

      learning how to use browser developers window for css changes

      L 1 Reply Last reply Jan 9, 2024, 12:38 AM Reply Quote 0
      • L Offline
        lkthomas @sdetweil
        last edited by Jan 9, 2024, 12:38 AM

        @sdetweil sorry what do you mean?

        S 1 Reply Last reply Jan 9, 2024, 12:44 AM Reply Quote 0
        • S Offline
          sdetweil @lkthomas
          last edited by Jan 9, 2024, 12:44 AM

          @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 Jan 9, 2024, 12:46 AM Reply Quote 0
          • L Offline
            lkthomas @sdetweil
            last edited by Jan 9, 2024, 12:46 AM

            @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.

            S 1 Reply Last reply Jan 9, 2024, 12:47 AM Reply Quote 0
            • S Offline
              sdetweil @lkthomas
              last edited by Jan 9, 2024, 12:47 AM

              @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 Jan 9, 2024, 12:48 AM Reply Quote 0
              • L Offline
                lkthomas @sdetweil
                last edited by Jan 9, 2024, 12:48 AM

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

                M 1 Reply Last reply Jan 9, 2024, 2:12 PM Reply Quote 0
                • M Offline
                  MyMirror @lkthomas
                  last edited by Jan 9, 2024, 2:12 PM

                  @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

                  L 2 Replies Last reply Jan 9, 2024, 3:31 PM Reply Quote 0
                  • L Offline
                    lkthomas @MyMirror
                    last edited by Jan 9, 2024, 3:31 PM

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

                    1 Reply Last reply Reply Quote 0
                    • L Offline
                      lkthomas @MyMirror
                      last edited by Jan 9, 2024, 4:17 PM

                      @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 Jan 9, 2024, 6:12 PM Reply Quote 0
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