I am using a Zero W for Environmental Data Logging. I am using a 3A rated power supply. The device itself is exclusively used remotely via ssh or VNC. For both cases, I am spontaneous losing connection to the device.
On some occasions, the device froze while I was using SSH and was hitting Tab (Autocomplete), but here I couldn't find a suitable solution for me, the following links didn't solve the problem: https://unix.stackexchange.com/questions/602518/ssh-connection-client-loop-send-disconnect-broken-pipe-or-connection-reset
so I edited my ~/.ssh/config, but without solving the issue:
Host *
ServerAliveInterval 20
TCPKeepAlive no
I noticed that sometimes I have several "^@" before a reboot in my /var/logs/syslog, but not always.
Dec 9 12:01:01 rasp2 CRON[1041]: (pi) CMD (/home/pi/Desktop/testalive.sh >/dev/null 2>&1)
Dec 9 12:02:01 rasp2 CRON[1051]: (pi) CMD (/home/pi/Desktop/testalive.sh >/dev/null 2>&1)
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
Dec 9 12:02:15 rasp2 systemd-modules-load[85]: Inserted module 'dwc2'
Dec 9 12:02:15 rasp2 systemd-modules-load[85]: Inserted module 'g_ether'
Dec 9 12:02:15 rasp2 systemd-modules-load[85]: Inserted module 'i2c_dev'
Another point was the powermanagment, but it seams not related: Make "iw wlan0 set power_save off" permanent
I have one crontab script running each minute, and I can effectively confirm that the device stops working. The final step is removing power and restart the device.
Is there any idea how I can approach the problem? How to find the issue/ which logfiles to check?
