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:

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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 — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#208>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ALP_7twKDGMdA_qpqA9XL4W9k24ixjwIks5tnKlJgaJpZM4TOLtf> .

[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