Google Voice call breaks wifi on GL.iNet GL-MT6000 Flint 2

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello! I recently purchased a GL-MT6000 (Flint 2) and loaded the recommended firmware (OpenWrt 23.05.5, r24106-10cc5fcd00) on it.

The issue I am having is that certain network loads (specifically, receiving a call on voice.google.com into google chrome browser running on a Linux laptop) causes all clients on that wireless interface to have very poor performance (speedtest.net gives very low throughput, for example). ssh logins to the router itself are very slow (and very laggy)

Clients connected by ethernet do not experience any issues (at least from cursory testing).

Moreover, this device has two wireless interface: MediaTek MT7986 802.11ax/b/g/n
and MediaTek MT7986 802.11ac/ax/n (5G). I only experience this problem when using the 2.4GHz interface. If I switch the laptop to using the 5GHz interface for making the call, the laptop is able to get perfectly fine wireless throughput (and I notice no lag when ssh-ing into the router). Other clients on the network (albeit, not on the 5GHz) also work fine.

I was not able to find any obvious discussion of this, but I may just have not searched hard enough. I get errors like

…:21:32 2025 daemon.notice hostapd: phy0-ap1: AP-STA-DISCONNECTED $REDACTED_MAC
…:21:43 2025 daemon.notice hostapd: phy0-ap1: STA $REDACTED_MAC IEEE 802.11: did not acknowledge authentication response
…:21:43 2025 daemon.notice hostapd: phy0-ap1: STA $REDACTED_MAC IEEE 802.11: did not acknowledge authentication response
…:21:43 2025 daemon.notice hostapd: phy0-ap1: STA $REDACTED_MAC IEEE 802.11: did not acknowledge authentication response
…:21:49 2025 daemon.notice hostapd: phy0-ap1: STA $REDACTED_MAC IEEE 802.11: did not acknowledge authentication response
…:21:49 2025 daemon.notice hostapd: phy0-ap1: STA $REDACTED_MAC IEEE 802.11: did not acknowledge authentication response
…:21:49 2025 daemon.notice hostapd: phy0-ap1: STA $REDACTED_MAC IEEE 802.11: did not acknowledge authentication response

My first concern is if this is hardware issue, I want to return the device to the vendor ASAP. Is anyone aware of this issue? Is switching to the latest snapshot safe for this device (and/or should I try that?).

Thanks!

2

What do you have in /etc/config/wireless ? Replacing mac addresses, names and secrets...

3 
config wifi-device 'radio0'
	option type 'mac80211'
	option path 'platform/soc/18000000.wifi'
	option channel '1'
	option band '2g'
	option htmode 'HE20'
	option cell_density '0'

config wifi-iface 'default_radio0'
	option device 'radio0'
	option network 'lan'
	option mode 'ap'
	option ssid REDACTED
	option encryption 'sae-mixed'
	option key REDACTED

config wifi-device 'radio1'
	option type 'mac80211'
	option path 'platform/soc/18000000.wifi+1'
	option channel '36'
	option band '5g'
	option htmode 'HE80'
	option cell_density '0'

config wifi-iface 'default_radio1'
	option device 'radio1'
	option network 'lan'
	option mode 'ap'
	option ssid REDACTED
	option encryption 'sae-mixed'
	option key REDACTED

config wifi-iface REDACTED
	option device 'radio0'
	option network REDACTED
	option mode 'ap'
	option ssid REDACTED
	option encryption 'sae-mixed'
	option key REDACTED

Disabling the second wifi-iface on radio0 didn't seem to have any affect, but I did not try to fully reproduce the issue with that interface disabled.

4

is never a good start, use WPA2 or 3.

5

Thanks for looking at this! I just changed it to psk2 and disabled the second wifi-iface. I was able to reproduce the problem, so that unfortunately did not help.

6

as long as you don't switch back :slight_smile:

7

Not likely to help this issue but you should always set your country code so the radio is doing as much as is legal in your country. Set the same country on both radios.

Is a Bluetooth device involved in these calls?

3 Likes
8

Is a Bluetooth device involved in these calls?

Very astute! Turning off my bluetooth headphones resolved the issue (and turning them on again causes the problem). I must not have been using the 2.4GHz bands with my older router. I suppose the mitigation for this is to just use the 5GHz frequencies?

9

You have to fix your bt circuit to not interfere with wifi.

10

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