Pizero wifi crashes after a few minutes

[piran]

So,
I'm running a USB webcam from a pizero and doing some opencv manipulation on the iamges and serving the over flask. It works absolutely fine for a while but then the wifi stops working. doing a sudo wifi.sh will either say that there is no wifi adapter or the the wifi doesn't support scanning.
This only appear to happen if X is running, if  I drop out to the commandline then it keeps running just fine, so I can work with that, not sure where to go with the log files to work out a longer term solution.

[mocore]

idk / perhaps
this "regular warnings mmc1 timeout waiting for hardware cmd interrupt #1556 " @ https://github.com/raspberrypi/firmware/issues/1556
issue has  the same log message as neterr2.txt [line:29]  ( could be your issue is some how related ....)
 ... that msg appears to stem from sdcard firmware driver

 + https://github.com/raspberrypi/firmware/issues/1556#issuecomment-816209634

FYI there is a patch being upstreamed that provides a workaround to a hitherto unknown (to us) feature of the BCM2711 SDHCI controller.

sounds like fun 

could be worth trying the suggested fix?
,.. all though the few others who attempt to test reported mixed results 

may well be worth posting ur logs/err report to that issue

if the problem is between kernel & firmware
(afaik) the ppl who need to know are more likely to be reading https://github.com/raspberrypi/firmware/issues
than to signup/longing and down load  the logs from core forum (imho)

perhaps also relevant ( from neterr.txt, quoted so any one searching similar might find relevant txt!! )

[ 1102.569585] mmc1: card 0001 removed
[ 1102.720594] mmc1: new high speed SDIO card at address 000

 

[   48.742358] Xorg[4354]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
[  487.183525] brcmfmac: brcmf_sdio_readframes: RXHEADER FAILED: -110
[  487.183556] brcmfmac: brcmf_sdio_rxfail: abort command, terminate frame, send NAK
...
[ 1170.905604] brcmfmac: mmc_submit_one: CMD53 sg block write failed -110
[ 1170.905674] brcmfmac: brcmf_sdio_txfail: sdio error, abort command and terminate frame
...
[ 1170.908330] brcmfmac: brcmf_sdio_hdparse: seq 188: max tx seq number error
[ 1181.150770] mmc1: Timeout waiting for hardware interrupt.
[ 1181.150903] brcmfmac: mmc_submit_one: CMD53 sg block write failed -110
[ 1181.150941] brcmfmac: brcmf_sdio_txfail: sdio error, abort command and terminate frame
[ 1181.151845] brcmfmac: brcmf_sdio_hdparse: seq 244: max tx seq number error
[ 1181.152122] brcmfmac: brcmf_sdio_hdparse: HW header checksum error
[ 1181.152136] brcmfmac: brcmf_sdio_rxfail: terminate frame
...
[ 1200.257590] [drm:validate_tile_binning_config [vc4]] *ERROR* Failed to allocate binner memory: -12

** disclaimer i have no clue , just guess work , potentially barking up the wrong tree 

This only appear to happen if X is running, if 

which X version
which kernel version
what picore ...
ect

[mocore]

[ 1101.929557] CPU: 1 PID: 77 Comm: kworker/u13:0 Tainted: G         C         6.6.47-piCore-v8 #21
[ 1101.929577] Hardware name: Raspberry Pi Zero 2 W Rev 1.0 (DT)

 http://tinycorelinux.net/www/15.x/aarch64/releases/RPi/src/kernel/6.6.47-piCore-v8_.config

which X version
which kernel version
what picore ...
ect

...what power supply !!!!  ( how many amps! )

[piran]

Thank you for your help, it gives me some things to dig around with. I'll let you know if I get anywhere

[piran]

...what power supply !!!!  ( how many amps! )

Good call, it turns out to be the power supply, tried various different powers and it worked until I ran the program which put a little more stress on the system. Some just rebooted at that point.

Using a meaty powersupply and the problem has gone. Thanks

[piran]

Although the next problem arises as a seg fault after an hour .... little steps

or not - it's still failing with brcmfmac_sdio errors

[mocore]

possible things to try

- a powered usb hub ( to rule out power issues , perhaps cabling could also be a factor... )
     perhaps compareing usbcam power used with https://commons.wikimedia.org/wiki/Category:USB_power_meters
      a) pizero-usb
      b) pc-usb

- try asking @ https://github.com/raspberrypi/firmware/ to see what they make of the ' brcmfmac_sdio errors '  dmesg / situation

[piran]

Thanks.
I've tried various different power supplies and can certainly get it to crash faster with a lower power supply.
I'll check out the firmware
I'm also going to try a different SD card just in case there's a problem there.

[mocore]

fwiw , i wonder if any thing (psu,pi,sdcard,wifichip,camera)  is getting hot ?!!! 

 ... if you can cook egg's&bacon on your psu/pi/sd  perhaps the problem is  https://en.wikipedia.org/wiki/Thermal_runaway

which oddly/completely irrelevantly reminds me of Valeria Golino  https://www.reddit.com/r/tipofmytongue/comments/12y2g4/tomt_movie_with_bellycooking/