@sigxcpu said in WiFi once lost never reconnects:

@dc42 until you implement a more complex solution, can't you simply reboot the wifi module on connection lost (if the printer is configured as STA)?

WiFi Router reboot is not the only use case. I often experience losing one browser connection (Android tablet) and keeping another (Chrome on Win10) during long prints. I'd hate to risk them both. Therefore, perhaps some form of individual connection retry/reset would be better.

By the way...

Evidence points to the "hang up" being in the Duet. No amount of browser reset, cache reset, reboot, etc, etc, etc. on the tablet has ever allowed the Tablet-to-Duet session to reconnect. Once the print finishes, a Duet M999 or power cycle always allows a (re-) connect from the tablet.

@hedeon When multiple connections exist, that are all "actively polling", only the first one to poll gets the direct response.

rr_status is mostly the answer to this.

That does sound like a problem with the WiFi module. It's possible in theory to set the Mac address in firmware, but we don't use that facility because each WiFi module is supposed to have a unique default address.