GL-AX1800 Flint frequent Wifi hiccups

Technical Support for Routers
1

I am running a simple 5 GHz wireless network (80MHz, channel 48) secured with WPA-PSK2. All of my computers and mobile devices experience frequent loss of wireless connectivity while still claiming to be connected to the network. This manifests with eg. inability to load a website, lack of response during SSH session or video buffering. The issue disappears for after a minute or two and the network keeps on working fine a few minutes until the problem appears again.

The problem is not reproducible on my old router (Netgear R6220 running OpenWRT 21.02) which I needed to replace due to its 2.4 GHz radio that recently died.

Do you have any ideas what I should look for?
What log files would you need to shine some light on the issue from your side?

I plan to run leave a ping command running on three devices - the router, computer connected to wireless network, and computer connected to Ethernet interface. I also play to run mtr program on the device connected to wireless network.

By the way, right now I am seriously considering returning the router as it is unusable for its purpose which is sad to experience.

EDIT.
Some basic ping tests show that the problem occurs only on the wireless network and not on the router itself.
Log from router from the time the issue was seen.
Ping log from router to Google DNS.

Ping logs are not synchronized from the start but have overlapping time.

2

Ping log from computer connected to wireless network to router, to Google DNS.

Briefly looking at the logs I see that there are periodic scans on wifi interface visible:

Wed Mar 23 17:32:31 2022 user.info : [ 1353] gl-wifi-core>> wifi(radio) scan failed. Use phy to scan...
Wed Mar 23 17:32:31 2022 kern.info kernel: [  509.996691] 8021q: adding VLAN 0 to HW filter on device tmp.wifi1
Wed Mar 23 17:32:32 2022 kern.info kernel: [  511.002506] 8021q: adding VLAN 0 to HW filter on device tmp.wifi1
Wed Mar 23 17:32:33 2022 kern.info kernel: [  512.007379] 8021q: adding VLAN 0 to HW filter on device tmp.wifi1
Wed Mar 23 17:32:33 2022 kern.warn kernel: [  512.019177] ieee80211_mbo_vdetach: MBO terminated
Wed Mar 23 17:32:33 2022 kern.warn kernel: [  512.019203] ieee80211_oce_vdetach: OCE terminated
Wed Mar 23 17:33:29 2022 user.info : [ 1353] gl-wifi-core>> wifi(radio) scan failed. Use phy to scan...
Wed Mar 23 17:33:29 2022 kern.info kernel: [  568.082333] 8021q: adding VLAN 0 to HW filter on device tmp.wifi1
Wed Mar 23 17:33:30 2022 kern.info kernel: [  569.088440] 8021q: adding VLAN 0 to HW filter on device tmp.wifi1
Wed Mar 23 17:33:31 2022 kern.info kernel: [  570.093402] 8021q: adding VLAN 0 to HW filter on device tmp.wifi1
Wed Mar 23 17:33:31 2022 kern.warn kernel: [  570.105620] ieee80211_mbo_vdetach: MBO terminated
Wed Mar 23 17:33:31 2022 kern.warn kernel: [  570.105648] ieee80211_oce_vdetach: OCE terminated

This sounds like a possible issue to me.

3

The log is related to repeater. If you do not use repeater, try remove all of the saved SSIDs and check again

4

Yeah, there was one Wifi network known by the repeater which I used for a few minutes just after unpacking the router. I have removed it and the issue is gone, router has been working perfectly for a few hours now. Great, thanks for your help!

Funny thing, when swapping the old and new router, I named the new network exactly the same so Flint remembered the network it broadcasted by himself (at least from user point of view, I don’t remember if the Wifi network have some random identifier part or it is completely derived from its name). Then I connected the to WAN with a cable without turning off the repeater in any way.

5

Hi robin92pl , what firmware version are you using?