What is the problem?
Octopi on RPi 3b has strange unexplained behavior when connecting to WiFi network
Additional information about your network (Hardware you are trying to connect to, hardware you are trying to connect from, router, access point, used operating systems, ...)
I use Wifi router to connect 1 windows PC (connected to Eth), 3 windows Laptops, 5 ios mobile phone and several home devices. I use DHCP for IP management, router IP address is 192.168.100.1.
I burn octopi to 16GB sdcard using latest Pi Imager. Set octopi-wpa-supplicant.txt as per my WiFi configuration.
I use 3A mobile phone charger (PD), and connect Pi Camera. Put RPi besides my wifi router temporarily for setup.
Boot octopi, using hdmi monitor and keyb/mouse, I can see that it boots successfully.
From ifconfig, I can see that octopi receive IP from the router (192.168.100.2), and it can ping the router (192.168.100.1).
And then some unexpected behavior observed:
*) Octopi can't ping to all laptops (using IP Address), vice versa
*) If I let octopi to keep pinging to laptop A, and laptop A to octopi, about 20-30 minutes later they can ping each other, and I can access web dashboard. But still only to Laptop A. Ping to another device result "Destination Host Unreachable" and sometimes "request time out"
*) If I use ethernet from RPi to router, this behavior is not happen. Octopi instantly able to ping to all laptops after completing boot (different IP Address). And also all laptops can access to octopi web. But this is not an option because my router is across the room from my Ender-3
*) While connected, I updated all module from octopi dashboard that need update, hope that it solve the problem, but it's not.
*) Tried to reboot or reflash sd card doesn't help.