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From: The Natural Philosopher <tnp@invalid.invalid>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Wifi error log for Bookworm?
Date: Sun, 27 Oct 2024 11:13:12 +0000
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On 26/10/2024 23:38, Steven Hirsch wrote:
> On 10/24/24 23:02, bp@www.zefox.net wrote:
>> My Pi5 running bookworm has developed flaky WiFi behavior about
>> 24 hours after the latest upgrade.
>>
>> Where should I look for error messages? Nothing shows up on the
>> screen during negotiation, it appears that the Pi negotiates
>> for a minute or two and then gives up. Two red X's appear in
>> the Wifi entry in the top-right menu bar and that's it.
>>
>> The only visible hint is that even if the connection is specified
>> at 2.4 GHz a wavemon window is left showing what appears to be a
>> 5 GHz attempt. My access point doesn't support 5 GHz, making the
>> attempt, if it is one, appear to be a mistake.
>>
>>
>> The access point works with other devices, so I don't think it's
>> the problem.
>>
>> Thanks for reading and any suggestions!
> 
> This sounds very familiar.  I fought the same pitched battle here with 
> Wifi and Pi5 under Bookworm.  Finally discovered that HDMI output 
> interferes with the 2.4 GHz band.  Try running headless over ssh and see 
> if that's any better?  Made an improvement here for 2.4 GHz, but did not 
> help 5 GHz connectivity.
> 

I have read this elsewhere. All my Pis run headless

> I finally ended up replacing an 8 year old Wifi router and that fixed 
> the 5 GHz band.  Something about the Pi5 Wifi implementation really does 
> not like older routers.
> 
> 
One other oddity that probably isn't germane is that my pi PICOS would 
not connect to an extreme 'edge of band' frequency  which is UK legal 
until I removed the code that said 'use only UK legal frequencies'

> 

-- 
Labour - a bunch of rich people convincing poor people to vote for rich 
people by telling poor people that "other" rich people are the reason 
they are poor.

Peter Thompson