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  4. PI won't restart / 100% CPU

PI won't restart / 100% CPU

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  • L Offline
    L Offline
    LastSamurai
    Hardware Contributor
    wrote on last edited by
    #1

    This might not be the perfect forum for my question but I guess I am not the only one here running domoticz on a raspberry pi (B in my case) as a controller for mysensors. Everything was working fine for me for more than half a year but recently I noticed that my pi was running at around 100% cpu utilization for some months (according to the sensor data in domoticz).
    I coudn't ssh to it (using putty from windows I got some software error message), so I tried to restart it using the panel in domoticz. I guess that just restarts the software though, anyways it did not help. So I tried to restart it by pulling the power and now it won't start up anymore. The power led is constantly on (red) and one other flashes 2 times (twice) and then stays off. Google told me this means the sd card can't be read. I had some similar issues when installing the system where it was running without any problems until I tried to restart. Since then it's been running without problems (but also without a restart).
    Any ideas how to fix this?

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    • S Offline
      S Offline
      sundberg84
      Hardware Contributor
      wrote on last edited by
      #2

      I have seen some issues on Domoticz forum about some versions causing 100% CPU (bugs).
      Maybe you can verify you dont run one of those versions...

      If you pulled the power without using any command, you have probably corrupted the sd-card. The storage is pretty sensitive to power issues. You need to take the sd-card out, format it and reflash domoticz.

      Controller: Proxmox VM - Home Assistant
      MySensors GW: Arduino Uno - W5100 Ethernet, Gw Shield Nrf24l01+ 2,4Ghz
      MySensors GW: Arduino Uno - Gw Shield RFM69, 433mhz
      RFLink GW - Arduino Mega + RFLink Shield, 433mhz

      L 1 Reply Last reply
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      • S sundberg84

        I have seen some issues on Domoticz forum about some versions causing 100% CPU (bugs).
        Maybe you can verify you dont run one of those versions...

        If you pulled the power without using any command, you have probably corrupted the sd-card. The storage is pretty sensitive to power issues. You need to take the sd-card out, format it and reflash domoticz.

        L Offline
        L Offline
        LastSamurai
        Hardware Contributor
        wrote on last edited by
        #3

        @sundberg84 Yes, thank you. I have just reflashed to another sd card hoping that it runs fine now (and it does for now). I will check the domoticz version later. I am currently running 2.3530, although I don't know if thats the same one as before the crash.
        I just did not know what else to do when I cound't reach the pi via ssh^^ Bad idea I guess.

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