RPi 3. Unpredictable monitoring mode freeze

[Olegas]

Sometimes, after unpredictable amount of time working in monitor mode, something fails and monitoring mode is not working anymore (no packets captured, etc...) Symptoms:

• nexutil calls takes much more time to complete than usual
• nexutil -k gives strange output, something like chanspec: 0x6863, 85/160, even after nexutil -k1 call
• nexutil -m always returns 0, even after nexutil -m2 call

[matthiasseemoo]

The firmware might have crashed. Run cat /sys/kernel/debug/brcmfmac/.../forensics to see the console.

Oleg Elifantiev notifications@github.com schrieb am Di., 10. Apr. 2018, 14:44:

Sometimes, after unpredictable amount of time working in monitor mode, something fails and monitoring mode is not working anymore (no packets captured, etc...) Symptoms:

• nexutil calls takes much more time to complete than usual
• nexutil -k gives strange output, something like chanspec: 0x6863, 85/160, even after nexutil -k1 call
• nexutil -m always returns 0, even after nexutil -m2 call

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[Olegas]

I don't have this folder /sys/kernel/debug/brcmfmac on my Pi

[ajebulon]

Same thing happens to me too. I'm using RPi 4B