Deutsch   English   Français   Italiano  
<vcolkf$24ol2$8@dont-email.me>

View for Bookmarking (what is this?)
Look up another Usenet article

Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: The Natural Philosopher <tnp@invalid.invalid>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: bookworm wifi (was spontaneous locale change on bookworm)
Date: Sun, 22 Sep 2024 09:48:15 +0100
Organization: A little, after lunch
Lines: 51
Message-ID: <vcolkf$24ol2$8@dont-email.me>
References: <vcmq6m$1l88o$1@dont-email.me> <vcmua5$1luqv$1@dont-email.me>
 <vcn3ep$1mla1$4@dont-email.me> <vcnm9h$1plc3$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sun, 22 Sep 2024 10:48:16 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="b83977870f773d29c3595abc7b614c8d";
	logging-data="2253474"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX18jNr7YJPSj+pI10EaoHzCFDp2/WMY2Mdc="
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:2E9mv+DgNnlcI8L/YH1PFEd5+R0=
In-Reply-To: <vcnm9h$1plc3$1@dont-email.me>
Content-Language: en-GB
Bytes: 2842

On 22/09/2024 00:53, bp@www.zefox.net wrote:
> [subject updated to reflect recent observations]
> 
> The Natural Philosopher <tnp@invalid.invalid> 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!