Subj : My question isn't about the fault, its about how to find it. To : All From : The Natural Philosopher Date : Fri Sep 13 2024 14:34:44 Yesterday I brought up a brand new Pi Zero 2 W and after a bit, it was all hunky dory. Sometime last might, it went offline. No route to host. I rebooted it and it lasted half an hour. Then it wouldn't reboot at all. Its now sitting next to the wifi router is configured for and is for now accessible. I have no HDMI adapter for it., Its headless and normally accessible via ssh. What I want to know is where in the logs to start looking for any issues? The most interesting thing is that journalctl is full of unrelated messages *all the time I could not access* the PI Zero 2W Mostly related to Sep 13 11:12:24 PiFi2 systemd[715]: rpi-connect-wayvnc.service: Scheduled restart job, restart counter is at 1515. Sep 13 11:12:24 PiFi2 systemd[715]: Stopped rpi-connect-wayvnc.service - WayVNC process used by Raspberry Pi Connect. Sep 13 11:12:24 PiFi2 systemd[715]: Starting rpi-connect-wayvnc.service - WayVNC process used by Raspberry Pi Connect... Sep 13 11:12:24 PiFi2 systemd[715]: rpi-connect-wayvnc.service: Control process exited, code=exited, status=1/FAILURE Sep 13 11:12:24 PiFi2 systemd[715]: rpi-connect-wayvnc.service: Failed with result 'exit-code'. Sep 13 11:12:24 PiFi2 systemd[715]: Failed to start rpi-connect-wayvnc.service - WayVNC process used by Raspberry Pi Connect. That bunch was followed by an ssh session closed message. I didnt close the session. [note: I have disabled VNC and wayland in raspi-config - how to remove vnc entirely?] [Ah. apt-remove rpi-connect seems to work okay ] So it appears that the machine was up, but simply wasn't connected TCP/IP/Wifi wise? It did not respond even to pings. or presumably ARPS... Ah. I found something. Sep 13 09:42:54 PiFi2 NetworkManager[529]: [1726216974.2842] device (wlan0): Activation: (wifi) access point 'Larksrise' has security, but secrets are required. Sep 13 09:42:54 PiFi2 NetworkManager[529]: [1726216974.2948] device (wlan0): Activation: (wifi) connection 'Larksrise' has security, and secrets exist. No new secrets needed. Sep 13 09:43:19 PiFi2 NetworkManager[529]: [1726216999.7653] device (wlan0): Activation: (wifi) association took too long Now googling suggest that may be randomized MAC addresses on the wlan0 interface, or 802.11n enabled on the router. Neither is active as far as I know. *Well I have possibly fixed it.* By explicitly creating /etc/NetworkManager/conf.d/30-mac-randomization.conf as [device-mac-randomization] wifi.scan-rand-mac-address=no So far it's stable after an hour or two -- “The fundamental cause of the trouble in the modern world today is that the stupid are cocksure while the intelligent are full of doubt." - Bertrand Russell --- SoupGate-Win32 v1.05 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3) .