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Spectrum Analayser 1900ACS
Posted: Thu Feb 22, 2018 5:35 pm
by 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
Re: Spectrum Analayser 1900ACS
Posted: Thu Feb 22, 2018 6:06 pm
by 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.
Re: Spectrum Analayser 1900ACS
Posted: Fri Feb 23, 2018 7:52 am
by 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
Re: Spectrum Analayser 1900ACS
Posted: Fri Feb 23, 2018 8:05 am
by 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.
Re: Spectrum Analayser 1900ACS
Posted: Fri Feb 23, 2018 10:03 am
by 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'
Re: Spectrum Analayser 1900ACS
Posted: Fri Feb 23, 2018 1:27 pm
by 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?
Re: Spectrum Analayser 1900ACS
Posted: Sat Feb 24, 2018 7:35 am
by Lantis
If you add “ap-force” does it work?
iw wlan0 scan ap-force
Re: Spectrum Analayser 1900ACS
Posted: Sat Feb 24, 2018 8:05 am
by 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
Re: Spectrum Analayser 1900ACS
Posted: Sat Feb 24, 2018 4:40 pm
by Lantis
Unfortunately it must be the expected behaviour