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zwave-js / node-red-contrib-zwave-js

The most powerful, high performing and highly polished Z-Wave node for Node-RED based on Z-Wave JS. If you want a fully featured Z-Wave framework in your Node-RED instance, you have found it.
MIT License
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[Bug]: Watchdog causing a pi 4 reboot when the Aeotec zwave stick is pluged in. #220

Closed WarrenEvans closed 2 years ago

WarrenEvans commented 2 years ago

Contact Details (optional)

warrenevans@xtra.co.nz

What happened?

I have recently started to use the built in pi4 watchdog. This was done to over come a problem with the pi4 locking up randomly. Everything works fine with the pi4 until I plug in my Aeotec Zwave Stick (Gen 5+). This causes the watchdog to reboot the pi4. I have set the watchdog to 15seconds (max time for pi4). Just to make sure all else was fine, I have run the pi4 for 2 weeks with out the zwave stick, to ensure no other problems. The pi4 runs fine. The use of the watchdog was to fix a lockup problem that happens every few months. As soon as the zwave stick is plugged in, the watchdog reboots in 15 seconds.

I have also tested with the watchdog turned OFF. The pi4 and zwave works fine. Then turn on the watchdog. the pi4 will now reboot every 15 seconds.

How to reproduce?

To replicated to the watchdog reboot.

  1. With Watchdog turned off. setup a 1 zwave device using a Aeotech Z-Stick with node red.
  2. Remove the z-stick from the pi 4.
  3. Turn on the watchdog to 15seconds.
  4. Check the pi4 is running.
  5. Plug in the z-stick. The pi4 will reboot in 15 seconds.

Version

6.5.5

Node-RED Version

2.2.2

What hardware are you seeing the problem on?

Raspberry Pi

Relevant Z-Wave-JS log output

No response

marcus-j-davies commented 2 years ago

Hi @WarrenEvans

I'm struggling to understand what that has to do with this project? Shouldn't you be speaking to the Raspberry Pi Foundation / Aeotec?

With that said, the NR module will 'soft reset' the USB device (ZStick) but this is as per ZWave specification as part of the initialization routine, and this involves bringing down the stick, so if the RPi4 watchdog thinks this is a hardware failure, it may be the cause.

You can disable (if not already) this soft reset on the controller node. if it is already disabled - then you need to seek support from the Foundation and /or Aeotec.

Also, bear in mind, that some Aeotec Sticks have problems with the RPi4. It was common to state, that Gen5+ was not problematic with the Pi4 - but that's incorrect - some early Gen5+ also have issues.

WarrenEvans commented 2 years ago

Hi Marcus

Thank you for your reply. I have now done more testing. You are correct, the problem is with the Pi4 and the USB driver stalling the watchdog update. Thanks again for looking at this.

Have a great week Warren Evans