Spectrum Analayser 1900ACS

[Rog66]

The 5GHz analyser seems to work when the firmware is first flashed from another firmware and after first reboot or reflash stops working (5Ghz chart never appears). The 2.4 chart works without a hitch.

Is there a fix for this?

Thanks

[Lantis]

Please run the following:
iwinfo

Find out what “wlan” your 5ghz is (probably wlan1)
Then:
iw wlan1 scan 2>&1

If that turns up results but the graph does not, there’s a problem.
If that turns up no results, your router is not picking up any networks.

[Rog66]

I get

"command failed:Device or resource busy (-16)"

Works ok on 2.4 GHz (wlan1) and on 5GHz on openwrt and dd-wrt

[Lantis]

Can you please post your /etc/config/wireless (minus anynpasswords).

I’ve seen device busy problems before but only:
1) during active DFS scan
2) when calling the scan too frequently

Sounds like there’s a system isssue somewhere.

[Rog66]

Here you go

Code: Select all

config wifi-device 'radio0'
	option type 'mac80211'
	option hwmode '11a'
	option path 'soc/soc:pcie-controller/pci0000:00/0000:00:01.0/0000:01:00.0'
	option htmode 'VHT80'
	option country 'GB'
	option channel '52'
	option noscan '1'

config wifi-device 'radio1'
	option type 'mac80211'
	option hwmode '11g'
	option path 'soc/soc:pcie-controller/pci0000:00/0000:00:02.0/0000:02:00.0'
	option country 'GB'
	option htmode 'HT20'
	option noscan '1'
	option channel '1'

config wifi-iface 'ap_g'
	option device 'radio1'
	option mode 'ap'
	option network 'lan'
	option disassoc_low_ack '0'
	option ssid 'xxx'
	option encryption 'psk2'
	option key 'xxx'

config wifi-iface 'ap_a'
	option device 'radio0'
	option mode 'ap'
	option network 'lan'
	option disassoc_low_ack '0'
	option ssid 'xxx'
	option encryption 'psk2'
	option key 'xxx'

[Rog66]

Does appear to be a DFS/driver issue. It works fine on channel 36 (which is used by my sky mesh network) and 149 but not on any other channel. Are there any updates to mwlwifi that we can try to see if that cures it?

[Lantis]

If you add “ap-force” does it work?
iw wlan0 scan ap-force

[Rog66]

no that doesn't work - just checked latest lede build and it looks like channel scan was only working on non-DFS channels as well and I had only tested on those channels

[Lantis]

Unfortunately it must be the expected behaviour