AR750S repeating 5GHz issue

@kyson-lok please see attached files

@alzhao I already updated to latest testing firmware.!

Anything new? It is the main usecase I bought the device for. I also tried many settings in LuCI and also resetted the whole device but the 5GHz wlan is only available and visible when I deactivate the repeated 5GHz wlan in LuCI. Do I have a faulty unit?

@tauceti We are on vacation now. We try to investigate this issue asap.

are you still on vacation or could you please continue investigating? @kyson-lok

I see you had changed the wireless configuration file. What did you modify? We can’t reproduce this issue.

Could you reproduce it, and then show me the system log?

Ok I will reset the whole device and start from scratch and then send you the logs.

it is strange. with the latest testing firmware (29.09) I cannot see my 5ghz WLAN when scanning for networks in AR750s router. It is only shown as DFS. Is the channel the issue? my 5Ghz Wlan uses 108 channel.

I retried and found out that the problem must be somehow that I have 2 WLANs (2,4 and 5 GHZ) with the same SSID. When I use only a 5GHZ WLAN with a unique SSID it seem to work

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Try checking your timezone / location. I saw the DFS channels when I accidentally had it set for Asia rather than the United States…

Do you mean the router itself SSID?


I re-examined: have 2 routers (not GLI fabric) which each send both a2,4 and 5 GHz
WiFi all with the same SSID. I get the above problem with the third Router (which is my AR750) when repeating the 5GHz WiFi but only if both other routers are operating. If I disable one non GLI router it works. Strange.

Thanks for your feedback, we will investigate this issue.

@tauceti Could you please upgrade the latest testing firmware? Here is the link to download. Please untick “keep settings” when upgrading, and don’t using luci instead of our webui to connect your upstream AP. Please let me know if this version fixed the issue.

Hi Kyson-lok,
thanks for the reply. It seems to work now. Perhaps it is because of the autochannel feature which is now enabled?

Not sure why, because we can’t reproduce this issue. However, we had fixed some bugs for 5GHz repeater, such as inconsistent bandwidth, channel issue and so on.

I meet with the same problem. I take gl-ar750s-3.006-1104.tar firmware and start with clean configuration: the problem remains. A750S prefectly uses 2.4GHz Wi-Fi as WAN, but fails to use 5GHz WiFi as WAN. I have saved config and logs. Here is my /etc/wireless:

config wifi-device ‘radio0’
option type ‘mac80211’
option channel ‘36’
option hwmode ‘11a’
option path ‘pci0000:00/0000:00:00.0’
option doth ‘0’
option txpower ‘20’
option band ‘5G’
option disabled ‘0’
option legacy_rates ‘1’
option country ‘RU’
option org_htmode ‘VHT80’

config wifi-iface ‘default_radio0’
option device ‘radio0’
option network ‘lan’
option mode ‘ap’
option encryption ‘psk-mixed’
option ifname ‘wlan0’
option wds ‘1’
option ssid ‘bordeaux_tr5g’
option key ‘XXX’

config wifi-device ‘radio1’
option type ‘mac80211’
option hwmode ‘11g’
option path ‘platform/qca956x_wmac’
option txpower ‘20’
option noscan ‘1’
option htmode ‘HT40’
option band ‘2G’
option disabled ‘0’
option channel ‘13’

config wifi-iface ‘default_radio1’
option device ‘radio1’
option network ‘lan’
option mode ‘ap’
option encryption ‘psk-mixed’
option wds ‘1’
option ifname ‘wlan1’
option ssid ‘bordeaux_tr’
option key ‘XXX’

config wifi-iface ‘sta’
option network ‘wwan’
option mode ‘sta’
option ifname ‘wlan-sta’
option encryption ‘psk2’
option key ‘XXX’
option disabled ‘0’
option ssid ‘bordeaux_5G’
option gl_bssid ‘64:09:80:73:D8:38’
option channel ‘36’
option bssid ‘64:09:80:73:D8:38’
option device ‘radio0’

Can you give the logs as well?


also, how does the country change to RU?

Oops. Sorry. After I post a message, I remember about iptables rules on this network. So it was a probem with my network configuration. Nevermind.

About ‘RU’ country. I suppose that country code survives reset.

so, you confirm that 5G doesn’t have problem?