Octpi on Raspberry Pi 4 WiFi lost overnight

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1

problem: Overnight (when DHCP refreshed) the PI4 disappears from the network. There is not reply to /octopi in browser, it's IP addressin browser, SSH or IP scanner.

What did you already try to solve it? Tested with the methods above. I have observed this behavior from time to time with other Pi running other versions of raspian but never with Octopi. Fix is usually running:

#!/bin/bash

sudo ifconfig wlan0 down

sudo ifconfig wlan0 up

sudo service networking restart

Logs: unsure how to get syslog without GUI

Additional information: Raspberry PI 4 running lasted release candidate of Octopi. Installed from image.

2

Tell your DHCP server on your network to issue the Pi a static IP address and the problem cures itself.

1 Like
3

Write a small script that pings Google or something. If it receives no response, it restarts the interface. Run it from cron every 5-10 minutes

4

I will try this every 10 min. and report back. I am not having a similar problem with OctoPi running on the B 3+

#!/bin/bash
echo 'execute ptest script' >> /home/pi/test.log
count=$(ping -c 3 8.8.8.8 | grep icmp | grep bytes | wc -l)
echo 'result: ' $count >> /home/pi/test.log

if [ $count == 0 ]; then
sudo ifconfig wlan0 down
sudo ifconfig wlan0 up
fi

5

Sadly (and oddly) that did not help. The log entries showed that there was never an inability to ping 8.8.8.8 yet this morning Octopi was unreachable by Browser or SSH.

6

UPDATE:

Sadly, I have not found a fix for this problem. I have switched back to my PI B+. Since around 2017 many people have reported this problem or minor variations on it. It is devilishly difficult to reproduce. If anyone has a good idea, I can hook the PI 4 back up again.