There is problem with the internal wifi on Orange Pi Lite and Armbian 5.20 (5.16 too).

I installed tshark (and tcpdump) and try to capture wifi packets in monitor mode.

Without success. What's better. Aircrack-ng works flawlessly.

I think, pcap library has a problem with switching the device to monitor mode.

 

"dumpcap: The capture session could not be initiated on interface 'wlan0' (wlan0: SIOCGIWPRIV: Argument list too long)."

 

'iwpriv' command runs without error, but the private command list is really long. Buffer too small??

 

Dumpcap run with no errors on external USB wifi dongle (TP-Link TL-WN722N), so I think problem is in firmware of internal wlan chip (or armbian driver).

 

Does this help? http://forum.armbian.com/index.php/topic/1241-opi-lite-wireless-device-not-working/?p=9793

@tkaiser:

 

Thank you for your hint. I can create wlan1 and switch to monitor mode.

 

Unfortunately, it did not help. 'Dumpcap' run but does not capture any packet.

My AP transmit beacon packet every 200 ms.