System and Network configuration • Wireless networking not connecting on Raspbery Pi 4

I have a Raspberry Pi 4 /8 GB running Debian Bookworm. In past months, the wireless connection worked fine. Now, after sitting unpowered for a few weeks, the Pi boots up but no wireless connection is made. The wireless signal icon in the toolbar does show a full strength connection and hovering over it shows it detects my local wireless network. So, I believe the wireless hardware on the Pi is working. No IP address is being assigned to the Pi though, which is set for dynamic IP assignment from my router. The router doesn't show the Pi in its connection list, and I can't ping the router or anything else from the Pi.
I re-ran "sudo raspi-config" and reset the network SSID and password -- and also made sure my country code was set to US, then rebooted. No change.

I rapidly ran out of my depth on networking config stuff, but at one point (in following someone's similar problem solution on the internet) I saw my wlan0 interface was "DORMANT". That sounds suspicious -- but if that is a potential problem how do I change it? (I think the command I ran to see this was "ifconfig wlan0")

I've also read about a supplicant file and an interfaces file. How should those be configured? I'm fine going back to a factory Debian configuration of those files to recover the wireless networking, but don't really want to reflash the entire OS.

Is there a step-by-step worklist I can run through to systematically check off and correct potential issues?

Statistics: Posted by kookamunga — 2024-07-10 23:08 — Replies 0 — Views 33

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