channels are hoping one to another

[gyillikci]

hello,

My setup is rpi3b and also observed the behaviour on rpi4. I used the svpcom-rtl8812au repo and installed it.

I set the wlan channel to 100 and when I give the command iwlist wlan1 channel i get it as expected

Current Frequency:5.5 GHz (Channel 100)

after I start the tx_Standalone.sh

iw wlan1 info shows that the channel changes constantly as below

pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	channel 3 (2422 MHz), width: 20 MHz, center1: 2422 MHz
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	channel 100 (5500 MHz), width: 20 MHz, center1: 5500 MHz
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	channel 120 (5600 MHz), width: 20 MHz, center1: 5600 MHz
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	channel 140 (5700 MHz), width: 20 MHz, center1: 5700 MHz
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	channel 1 (2412 MHz), width: 20 MHz, center1: 2412 MHz
	txpower 0.00 dBm
pi@raspberrypi:~/wifibroadcast $ iw wlan1 info
Interface wlan1
	ifindex 4
	wdev 0x100000001
	addr 3c:7c:3f:b1:53:1e
	type monitor
	wiphy 1
	channel 36 (5180 MHz), width: 20 MHz, center1: 5180 MHz
	txpower 0.00 dBm

is this expected a behaviour?

Thanks

[svpcom]

No. Check that device listed in networkmanager config as ignored.

[gyillikci]

Thanks,

I think, Its because of the network manager and not denying wlan0