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

Mirror turning black after a while

Scheduled Pinned Locked Moved Troubleshooting
45 Posts 16 Posters 30.6k Views 15 Watching
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  • D Offline
    doubleT Module Developer
    last edited by Jan 11, 2018, 5:51 PM

    Is there any kind of “sleep” mode on the system itself?
    The node log probably doesn’t detect what’s going on but maybe the console log would show (unfortunately, it’s reset when the browser window is refreshed). I’d start MM in dev mode and wait for the crash, then check the browser’s console log.

    R 1 Reply Last reply Jan 11, 2018, 7:49 PM Reply Quote 0
    • R Offline
      retroflex Project Sponsor Module Developer @doubleT
      last edited by Jan 11, 2018, 7:49 PM

      @doubleT Thanks for the tip! I will try dev mode and report back.

      1 Reply Last reply Reply Quote 0
      • C Offline
        Chris @Chris
        last edited by Jan 12, 2018, 5:56 AM

        @retroflex said in Mirror turning black after a while:

        @Chris
        Did you have the same error on the old version or did it appear with the latest?

        Hello,
        it is true that this is happening since the last version.
        I did not pay much attention to this because it was during an attempt to install a module that caused me a lot of trouble. I thought it was just that.
        As I told you, it’s still very episodic, it must have been more than two days since it did not happen.

        Regards,

        1 Reply Last reply Reply Quote 0
        • B Offline
          bimalnair
          last edited by Jan 18, 2018, 6:37 AM

          Hello All, is this issue fixed? I still have this issue and I get back the screen only by ctrl + R. I am experiencing this issue only after the recent update.

          R 1 Reply Last reply Jan 18, 2018, 8:48 AM Reply Quote 0
          • R Offline
            retroflex Project Sponsor Module Developer @bimalnair
            last edited by retroflex Jan 18, 2018, 8:49 AM Jan 18, 2018, 8:48 AM

            @bimalnair I haven’t done any more research. But now I have started in dev mode and will see if the console log says anything useful. But it usually takes some hours before my freezes, so I will know later today (hopefully).

            Another test is to remove module by module to see if a certain module is causing problems. Or the opposite, start with only one module and see if it will freeze. Can you check which modules we share? Maybe we can narrow it down a bit.

            1 Reply Last reply Reply Quote 0
            • B Offline
              bimalnair
              last edited by Jan 18, 2018, 9:15 AM

              I am using the following modules
              default/alert
              default/clock
              default/calendar
              default/currentweather
              default/weatherforecast
              default/newsfeed
              default/compliments
              MMM-ShipmentTracking
              MMM-Traffic
              MMM-ImagesPhotos
              MMM-dht22

              Will try disabling each module

              R 1 Reply Last reply Jan 26, 2018, 7:58 AM Reply Quote 0
              • C Offline
                Chris
                last edited by Jan 18, 2018, 10:24 AM

                Hello,
                I think it would come from one of your modules because I do not encounter the problem since I put my mirror with my usual modules. if that helps you, it happened to me when I tried to install and set up the MMM-Assistant.
                Regards,

                1 Reply Last reply Reply Quote 0
                • P Offline
                  prysme01
                  last edited by Jan 22, 2018, 8:43 AM

                  Hello, After upgrading MM to 2.2.0 and also upgrading my debian, I am also facing this issue of random black screen. PI is still up and I can log in and restart mm. Really annoying issue.

                  1 Reply Last reply Reply Quote 0
                  • R Offline
                    retroflex Project Sponsor Module Developer @bimalnair
                    last edited by Jan 26, 2018, 7:58 AM

                    @bimalnair Have you tried to find out which module is causing problems for you yet?

                    I have finally got a dev log file from the error… As it’s not timestamped, it’s hard to draw any conclusions. But this is one of the lasts logs, which presumably is when the mirror goes black:

                    [5966:0125/191204:FATAL:memory_linux.cc(35)] Out of memory.
                    #0 0x0000012a3bb0 
                    #1 0x0000012b4406 
                    #2 0x0000012c8ae6 
                    #3 0x000000d8bb1c 
                    #4 0x000000d8ba9e operator new()
                    #5 0x0000012b9ee0 
                    #6 0x0000012b94ce 
                    #7 0x0000012ba204 
                    #8 0x0000012cb2c6 
                    #9 0x0000012b89f6 
                    #10 0x000000b58d18 
                    #11 0x000000a34c38 
                    #12 0x000000a35a80 
                    #13 0x000000a349c2 
                    #14 0x00000221e2fa main
                    #15 0x000074c0f294 __libc_start_main
                    

                    I did not check which process is eating all the memory though. That will be the next step.

                    Other than that I can see in the log that I lost internet connection a couple of times:

                    fatal: unable to access 'https://github.com/MichMich/MagicMirror.git/': Could not resolve host: github.com
                    
                    Whoops! There was an uncaught exception...
                    TypeError: Cannot read property 'feed' of undefined
                        at ClientRequest. (/home/pi/MagicMirror/modules/MMM-Skolmaten/node_helper.js:45:20)
                    

                    And a lot of these logs, which I guess is ok:

                    Reusing 14 cached departure(s) for module: MMM-ResRobot
                    

                    Any bright ideas? :)

                    1 Reply Last reply Reply Quote 1
                    • C Offline
                      cruunnerr
                      last edited by Jan 26, 2018, 9:25 AM

                      @retroflex

                      the wifi on the RPi 3 is not the best. So i installed an automatically wifi_rebooter here. U could try that as well: http://alexba.in/blog/2015/01/14/automatically-reconnecting-wifi-on-a-raspberrypi/

                      in my case my Pi pings my router address every 3 minutes and when it cannot reach it, it reboots it’s wifi itself.

                      For your other problem u could try “nmon”.

                      sudo apt-get install nmon

                      start it by simply typing nmon

                      when it starts u can type letters to choose what u want it to show. with “t, l, m, c” it will show u “top processes”, “long therm CPU usage”, “memory usage” and “actual CPU usage”

                      M 1 Reply Last reply Jan 26, 2018, 12:03 PM Reply Quote 1
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