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    A New Chapter for MagicMirror: The Community Takes the Lead
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    why does my MM on pi crash every night?

    Scheduled Pinned Locked Moved Solved Troubleshooting
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    • S Offline
      sdetweil
      last edited by

      I have 4 MM running

      pi,
      nano
      odroid
      mac

      the pi crashes every night, the other three run great.

      I added MMM-Watchdog, and it restarts MM everynight multiple times
      i upped the timeout to 60 seconds, with 10 seconds front end update time
      still restarts…

      IF the UI thread has died, HOW can i figure out what is causing it?
      the PM2 log doesn’t give me that info

      on the pi, I display date/time, my custom water monitoring module, and background images from my local lan server… (all others are doing mostly the same, clock, pics, and one is showing water monitoring app too)
      all are on 2.8.0
      all have different versions of node and npm (system level differences)

      I haven’t been able to get the inspect mechanism to work
      https://electronjs.org/docs/tutorial/debugging-main-process

      any guidance welcomed

      Sam

      How to add modules

      learning how to use browser developers window for css changes

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

        watchdog has a problem… removing… have not crashed since increase swap space…

        will close for now as I work on the watchdog socket problem

        Sam

        How to add modules

        learning how to use browser developers window for css changes

        1 Reply Last reply Reply Quote 0
        • D Offline
          dazza120 @sdetweil
          last edited by

          @sdetweil I believe some one said the swap file was not big enough and the pi was burning through it and when it was full it would crash so I think they upped it to 4Gb

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          • S Offline
            sdetweil @dazza120
            last edited by sdetweil

            @dazza120 but why does it only crash at night? same system runs great all day long
            upped swap to 1g, from 99meg (which was all used)

            Sam

            How to add modules

            learning how to use browser developers window for css changes

            D 1 Reply Last reply Reply Quote 0
            • D Offline
              dazza120 @sdetweil
              last edited by

              @sdetweil I would imagine it’s full around that time mine use to crash every 12 hours without fail, I put it down to ram on the pi3B+ I got the pi 4 4Gb and it doesn’t crash anymore with the help of Watchdog too. Ram just gets eaten on the pi

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              • S Offline
                sdetweil @dazza120
                last edited by

                @dazza120 thx… i added

                free -m
                

                to the mm.sh , so when pm2 restarts I can see memory usage in pm2 logs

                Sam

                How to add modules

                learning how to use browser developers window for css changes

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                • D Offline
                  dazza120
                  last edited by

                  Link here https://forum.magicmirror.builders/topic/10940/issues-with-mm-freezing-and-rpi3-running-hot/10

                  S 1 Reply Last reply Reply Quote 1
                  • S Offline
                    sdetweil @dazza120
                    last edited by sdetweil

                    @dazza120 thx… had seen that… and it looks like the ui thread had died… (when debugging in the past)
                    both the other systems have swap at 1024 (odroid has 2meg ram) and 1978 (nano has 4gig ram)

                    Sam

                    How to add modules

                    learning how to use browser developers window for css changes

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                    • S Offline
                      sdetweil
                      last edited by

                      just for info… both the main modules background images and my water monitor app, stop processing while hidden, and my mmm-sleepwake puts the mirror to sleep (by hiding all the modules)

                      Sam

                      How to add modules

                      learning how to use browser developers window for css changes

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                      • S Offline
                        sdetweil
                        last edited by

                        just crashed again, watchdog killed it… not memory…

                        so I found the only path thru my water monitoring module with code that isn’t mine, and wrapped it in an exception handler to see if it is failing…

                        we shall see

                        Sam

                        How to add modules

                        learning how to use browser developers window for css changes

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

                          @sdetweil so far, does not crash.

                          If I add Watchdog, it gets restarted.
                          I’ve made the timeouts really long. Still fails overnight

                          Sam

                          How to add modules

                          learning how to use browser developers window for css changes

                          1 Reply Last reply Reply Quote 0
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