A while back, I wrote about installing NetworkManager if NextDNS activate fails to work.
Only... I realised that for some reason on Raspberry Pi (4), WiFi stopped working with the following errors:
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.2204] device (wlan0): state change: config -> failed (reason 'ssid-not-found', sys-iface-state: 'managed')
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.7525] device (wlan0): set-hw-addr: set MAC address to 92:F3:ED:C2:8F:9B (scanning)
Feb 17 11:55:02 tyr NetworkManager[449]: <warn> [1676631302.7559] device (wlan0): Activation: failed for connection 'superuser.one'
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.7562] device (wlan0): supplicant interface state: scanning -> disconnected
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.7562] device (p2p-dev-wlan0): supplicant management interface state: scanning -> disconnected
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.7577] device (wlan0): supplicant interface state: disconnected -> interface_disabled
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.7578] device (p2p-dev-wlan0): supplicant management interface state: disconnected -> interface_disabled
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.7579] device (wlan0): supplicant interface state: interface_disabled -> disconnected
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.7579] device (p2p-dev-wlan0): supplicant management interface state: interface_disabled -> disconnected
Feb 17 11:55:02 tyr NetworkManager[449]: <info> [1676631302.7585] device (wlan0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
The WiFi SSID and password (wpa_supplicant) never changed, so I wasn't sure what it was. However, as most Pi's are wired I didn't pay much attention, until today.