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   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   
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