Subj : Re: My question isn't about the fault, its about how to find it.
To   : The Natural Philosopher
From : Chris Elvidge
Date : Sat Sep 14 2024 22:25:15

On 14/09/2024 at 19:32, The Natural Philosopher wrote:
> On 14/09/2024 16:38, Chris Elvidge wrote:
>> On 14/09/2024 at 15:37, The Natural Philosopher wrote:
>>> On 14/09/2024 11:33, The Natural Philosopher wrote:
>>>> On 14/09/2024 08:12, Pancho wrote:
>>>
>>>
>>>> Prolly easier to get an HDMI and USB adapter and pop a monitor and
>>>> keyboard on it.
>>>> I spent hours yesterday googling for PI ZERO 2 W WIFI DISCONNECTS
>>>> and everybody has the same problem. Must be 1000 posts out there. It
>>>> seems that the 2W is basically a piece of shit. People try SD cards
>>>> that work perfectly in the Zero W, but don't work in the 2W.
>>>>
>>>> I tried every methodology suggested, and its still doing it.
>>>>
>>>> I am tempted to buy the old version, two  of which have been
>>>> faultlessly connected to the same wifi point for several years....
>>>>
>>>> Unfortunately I soldered a header block to this one so I can't
>>>> return it. Bin job probably.
>>>>
>>>>
>>> Well another day of configgling
>>>
>>> Tried to make it talk to a different wifi point. Bricked it.
>>> Reinstalled OS lite and started setting up. (again!)
>>>
>>> The Pi ZERO 2W apparently uses a different wifi chip - SYMANTEC
>>> SYN43436, not the old BROADCOMM BCM43438
>>
>> Where did you get this info?
>> On mine module cfg80211 is loaded by brcmfmac (broadcom?).
>>
> Apparently there are two possible chips. Broadcomm and symantec
> I THINK I have the broadcomm
>
> dmesg | grep brcmfmac
> [   12.461334] brcmfmac: F1 signature read @0x18000000=0x1541a9a6
> [   12.467893] brcmfmac: brcmf_fw_alloc_request: using
> brcm/brcmfmac43430-sdio for chip BCM43430/1
> [   12.468806] usbcore: registered new interface driver brcmfmac
> [   12.731339] brcmfmac: brcmf_c_process_txcap_blob: no txcap_blob
> available (err=-2)
> [   12.732079] brcmfmac: brcmf_c_preinit_dcmds: Firmware: * BCM43430/1*
> wl0: Jun 14 2023 07:27:45 version 7.45.96.s1 (gf031a129) FWID
> 01-70bd2af7 es7
> [   15.888471] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save enabled
>
> That's exactly  the same as my 'working perfectly' Pi Zero 1W...
>
> So its probably not that.
>
>
>
>> Model       : Raspberry Pi Zero 2 W Rev 1.0
>> Revision    : 902120
>> Raspberry Pi OS (bookworm, full); kernel  6.6.47+rpt-rpi-v8
>>
>> No problems with wifi over the last few weeks.
>> Wavlink M30HG4.V5030.191116
>>
>> Now bluetooth, there's a whole nother story!!
>>
> Disabled that baby straight off.
>
> Its very strange.
>
> Its 64 bit instead of 32 bit.
>
> But that's all that seems radically different hardware wise.
>
> Again some rumours are that the zero 2 being power hungry may be loading
> the PSU more.
>
> But in the middle of the night? Doing NOTHING?
>

I started with 32bit lite but swapped to 64bit full just to see what
happened. I had had no problems with 32bit lite (except bluetooth, see
above). However I haven't stopped bluetooth, just don't (as yet) use it.
My dmesg looks much the same as yours.

I feed mine from a 2.4 amp source.
But I also have USB3 hub + ethernet port feeding 256Gb SSD and USB speaker.

>
>
>



--
Chris Elvidge, England
PORK IS NOT A VERB

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