This is happening since january/february 2025 roughly: Home Assistant will loose its wifi connection and not reconnect.
I have an automation which will reboot the Raspberry Pi 4 when it cannot ping the WiFi IP anymore (RasPi has LAN and wifi both connected).
I want to put wifi in the guest wifi and LAN in the home lan network, so Home Assistant has a leg in each. But wifi is too unstable at the moment.
When I ssh into the host (not in to Home Assistant), the following command also fixes wifi immediately: nmcli connection up "Supervisor wlan0"
Hence, to me, it looks like the raspberry pi is not trying anymore to connect for some reason.
nmcli connection modify my-network connection.autoconnect-retries 0 did not help, unfortunately.
I’m putting this out there in case anyone figured out some other fix for wifi issues on raspberry pi 4.
I would also be interested in an automation able to run “nmcli connection up”, if that’s possible, as it’s significantly less nuclear than a reboot.