Subj : Re: bookworm wifi (was spontaneous locale change on bookworm) To : bp@www.zefox.net From : The Natural Philosopher Date : Sun Sep 22 2024 09:48:15 On 22/09/2024 00:53, bp@www.zefox.net wrote: > [subject updated to reflect recent observations] > > The Natural Philosopher wrote: >> >> Well it may be completely irrelevant Bob, but my Pi Zero 2 W issues seem >> to have been solved by use of a bigger power supply. >> It may be that the wifi chip is the most sensitive to inadequate voltages. > > The wifi dropout has repeated three or four times since the initial case. > Usually it dropped after an hour or so of uptime and couldn't reconnect > on its own, the Pi had to be rebooted. Haven't seen anything more about > rfkill after the first incident. > > I put a voltmeter on the GPIO power pins, it looks steady at 5.09-5.10 volts. > The meter isn't what I'd call a precision unit, but it's likely within 50 mV, > so the voltage isn't obviously wrong. > Mmm. if you have a scope, also check for noise. > Just a few minutes ago the WiFi dropped, then came back up on its own a > couple or three minutes later. Wasn't watching the voltmeter, unfortunately. > I'll keep an eye peeled more carefully, perhaps it can be caught in the act. > That is the sort of behaviour an 'on the edge' wifi subsystem displays. My router has 'connection time' and 'reconnection time' set to 1 hour and 1 day. I think that after the reconnection time is up, it wants a re-send of the secret keys. That is, you will, by design, get disconnected every so often,. The issue is whether the reconnect succeeds. Low voltage and/or local noise seem to be issues for the wifi chips in use. > Thanks for writing, > > bob prohaska > > -- Any fool can believe in principles - and most of them do! --- SoupGate-Win32 v1.05 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3) .