Hi ,
I try to enable watchdog in Jetson Nano developer kit with JetPack4.2.1 - L4T R32.2 release. It seems that there isn’t watchdog module by default for this release. So which watchdog model I can use?
Here is my steps:
sudo apt-get update
sudo apt-get install watchdog
modprobe iTCO_wdt
It throws “modprobe: FATAL: Module iTCO_wdt not found in directory /lib/modules/4.9.140-tegra”
modeprobe softdog
It throws “modprobe: FATAL: Module softdog not found in directory /lib/modules/4.9.140-tegra”
Here is system release version:
uname -a
Linux iot-desktop 4.9.140-tegra #1 SMP PREEMPT Tue Jul 16 17:04:49 PDT 2019 aarch64 aarch64 aarch64 GNU/Linux
My Nano froze last night and I could find no evidence for the crash on Syslog. I also store Tegrastats every one second. There was no anomaly before the crash. If I have had watchdog installed would it have rebooted the Nano? I was under the assumption that Nano had some hardware watchdog that takes care of such crashes.
What kind of issues will the software watchdog help recover from? What type of issues it will not help? Are there any suggestions for hardware watchdogs?
Can you give me steps for enabling the watchdog?
What other logs would help me find the reason for the crash other than Syslog?