PI Zero W. Another puzzler

The Natural Philosopher · 2023-09-16T09:19:48+00:00

First of all, huge thanks to all who helped me get to the bottom of the memory bug...code seems rock solid now.Here is another 'strangeness' .The Pi Zero W is configured to present its usb interface as an ethernet device, in order that for initial configuration, it can be plugged into a host computer which will acquire an Ethernet connection and be issued by DHCP with an address that can directly communicate with the Pi Zeros web server by issuing a command in the host computers web browser to a fixed IP address. When this works, it works perfectly.If the host computer (HP Elite Desk, Linux MINT 20) is rebooted WITH the Pi Zero connected, it works.If the host computer is rebooted *without* the Pi Zero connected and the Pi Zero is subsequently connected, it works.But if the Pi Zero is disconnected and then reconnected, it fails to pick up DHCP.The network manager app tries indefinitely to get a connection, and fails.If the computer is told to reboot with the Pi Zero connected, it hangs.If the computer is powered off and on, it works.This is the syslog for a *successful* connection after rebootSep 16 09:57:42 juliet NetworkManager[739]: [1694854662.5981] dhcp4 (usb0): option dhcp_lease_time => '43200'Sep 16 09:57:42 juliet NetworkManager[739]: [1694854662.5982] dhcp4 (usb0): option domain_name_servers => '172.16.21.32'Sep 16 09:57:42 juliet NetworkManager[739]: [1694854662.5982] dhcp4 (usb0): option expiry => '1694897859'Sep 16 09:57:42 juliet NetworkManager[739]: [1694854662.5983] dhcp4 (usb0): option host_name => 'juliet'Sep 16 09:57:42 juliet NetworkManager[739]: [1694854662.5983] dhcp4 (usb0): option ip_address => '172.16.21.3'Sep 16 09:57:42 juliet NetworkManager[739]: [1694854662.5983] dhcp4 (usb0): option next_server => '172.16.21.32'Sep 16 09:57:42 juliet avahi-daemon[735]: Joining mDNS multicast group on interface usb0.IPv4 with address 172.16.21.3.Sep 16 09:57:42 juliet NetworkManager[739]: ...

Sep 16, 2023 Last reply: 2 years ago 21 Replies

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Tauno Voipio 2 years ago

wlan0 is a different beast, not a subject to current discussion.

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Kenny McCormack 2 years ago

I get what you're saying. And, as I went to great lengths to explain in the text quoted above, I'm absolutely *not* doing the usual "You're off-topic! slag". I am genuinely trying to help OP.

But have you looked at the content of the c.s.r group? It is dominated by

3 (last time I checked) interminable threads about nonsense. Also, it is (or was) dominated by discussions of running various flavors of BSD on the Pi, something basically nobody does (*). So, yeah, it has pretty much lost its way and its relevance.

(*) Pretty much everyone runs RaspiOS - and for good reason.

Editor's note: I see that this thread is cross-posted into c.s.r. So noted. I am reading/posting to it from c.o.l.m

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