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    [SOLVED] random black screen

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    • qu1queQ Offline
      qu1que Project Sponsor
      last edited by qu1que

      Hello!

      I have a problem with my Magic Mirror since a few months ago, randomly, the screen goes black and doesn’t show any module. It doesn’t always happen at the same time, sometimes a few minutes after starting, sometimes after a few hours.

      Until recently I managed to “patch” it by restarting the lightdm service (sudo service lightdm restart) to restart the whole desktop and restart the script that launches the MM, as I have it configured to start as soon as I start the desktop environment. I even went so far as to create a cron job to run the lightdm service restart every hour, but I know that’s not a definitive solution.

      Yesterday, with patience, I managed to discover the problem, just by pressing F11 while the MM was running, I could see a kind of debugging console (I don’t know if this is the right name), where you can see the steps that the software is executing. Now that I’ve located it, I’d like to find a solution. I also managed to verify that this error occurs with the default modules “calendar” and/or “newsfeed”. But this is where I need your help, because I don’t understand the error message.

      I attach 2 screenshots where you can see the correct operation and another one where you can see the error. It is always the same, when I get this error, the screen goes black.

      Thank you in advance for all your help.

      Magic Mirror version 2.20.0
      Node version 16.6.0
      npm version 7.19.1

      Translated with www.DeepL.com/Translator (free version)

      MM_OK.png

      erro_MM.png

      S 1 Reply Last reply Reply Quote 0
      • S Offline
        sdetweil @qu1que
        last edited by

        @qu1que this error implies u are running MagicMirror in a docker container,

        MagicMirrorOS
        or one of the docker implementations

        https://github.com/WPO-Foundation/wptagent/issues/327

        Sam

        How to add modules

        learning how to use browser developers window for css changes

        qu1queQ 1 Reply Last reply Reply Quote 0
        • qu1queQ Offline
          qu1que Project Sponsor @sdetweil
          last edited by

          @sdetweil

          Thanks for the reply, but no docker installed in that raspbery, I’ve installed following the standard method 3 or 4 years ago, and doing the updates when they are ready. I’ve also have 2 backups of the entire micro SD. But maybe I’ll try a clean installation someday and see what happens.

          karsten13K S 2 Replies Last reply Reply Quote 0
          • karsten13K Offline
            karsten13 @qu1que
            last edited by

            @qu1que

            sounds like a memory problem on your raspberry pi, may other applications are running beside mm which need much memory or some modules of mm are “eating” memory …

            1 Reply Last reply Reply Quote 0
            • S Offline
              sdetweil @qu1que
              last edited by

              @qu1que maybe increase the swap space?

              Sam

              How to add modules

              learning how to use browser developers window for css changes

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              • M Offline
                MMRIZE
                last edited by

                This might be not related, but why are your newsfeeds so many and frequently fetched?

                qu1queQ 1 Reply Last reply Reply Quote 0
                • qu1queQ Offline
                  qu1que Project Sponsor @MMRIZE
                  last edited by

                  @MMRIZE

                  I don’t know, I have now 14 url of rss feeds, But I’ve tried with less of them and the error does not disappear.

                  1 Reply Last reply Reply Quote 0
                  • M Offline
                    MMRIZE
                    last edited by MMRIZE

                    Usually broker_posix.cc(46) Received unexpected number of handles error might seem to happen when the memory is insufficient for various reasons. I suspect you try to open too many files(newsfeed??) at once.

                    PS
                    newsfeed itself might not be the reason. (14 feeds are not TOO MANY). But your other module/process would be eating memory.

                    qu1queQ 2 Replies Last reply Reply Quote 0
                    • qu1queQ Offline
                      qu1que Project Sponsor @MMRIZE
                      last edited by

                      @MMRIZE

                      Maybe, I’ll try disabling some modules. Thanks. i will tell u when I try it.

                      1 Reply Last reply Reply Quote 0
                      • qu1queQ Offline
                        qu1que Project Sponsor @MMRIZE
                        last edited by

                        @MMRIZE

                        The thing is, now that I remember, during the weekend I disabled completely newsfeed module, and the error does not disappeared. Now I’ll try disabling more modules.

                        qu1queQ 1 Reply Last reply Reply Quote 0
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