Run the above on your RPi when it has lost the connection, and see in the output (might take several seconds to be displayed) if there is your wifi network name. Then once the wifi is lost, what are the output of both commands?Īnd once you have lost wifi, are you still able to view your wifi network? $ sudo iw wlan0 scan | less When you have the WiFi up and running, what are the output of iw wlan0 link and iw wlan0 station dump? When you start the RPi and that you have WiFi working, do you see the USB dongle in the list reported by lsusb -v? And after you lost the wifi, is it still listed by the same command? Check the connection info var/log/messages) does it tell you about some problems related to your WiFi hardware or about the network? Check your hardware Check your logsĬheck your system logs (e.g. What is the power of yours? Can it deliver up to 2A at 5V? (check on the power supply itself, it is often written in really small). You could also use a more powerful USB power supply for your RPi. It is possible that for example when the USB dongle needs to increase the Tx Power of the transmission because of for exemple some more noise in your radio environment, the RPi can't give enough power and the USB dongle behaviour can be undefined (e.g. Wpa-conf /etc/wpa_supplicant/wpa_nfĪs I said in a comment, try to put your USB WiFi dongle on a external USB hub with its own power.
If you are not using NetworkManager, on Raspbian/Debian you can edit the file /etc/network/interfaces and add a post-up entry for your interface, example: iface wlan0 inet dhcp
To make this change persistent, if you are using NetworkManager you can follow this gist to disable WiFi power saving. If it is ON, perhaps try to set it to OFF: iw wlan0 set power_save off. In sleep or dormant mode, the Pico consumes less than 2 milliamps, or 6 milliwatts That's. Did you try to keep a ping command running on the Raspberry (ping your router IP for example)? Does it stop after awhile? Or does it work but you can't connect to SSH somehow? Disable WiFi power savingĪre you using power saving mode on the WiFi dongle? Check it: $ iw wlan0 get power_save More info on the power consumption in sleep/dormant from u/geerlingguy : Well, when we talk about microcontrollers like the RP2040 on the Pico, power efficiency on a different planet.
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