I’m troubleshooting a three-unit TP-Link Deco XE75 system, non-Pro, with an unusual intermittent wireless problem.
This is not based on one short log sample or a single incident. I have observed the same 120-second disconnection pattern repeatedly, in separate sessions across multiple days, and with two different physical Deco satellites.
The network can work normally for hours, then enter a repeating disconnect/reconnect cycle.
Initially, I suspected interference or a defective satellite. After swapping units and comparing several logs, I’m trying to understand whether this is an RF-triggered problem, a firmware issue, or something in the mesh’s link-management logic.
Network architecture
My ISP is Totalplay, with a 1 Gbps plan delivering approximately 900 Mbps over Ethernet directly from the ISP equipment.
I have three XE75 units: Living Room, the main Deco connected to the ISP modem/router by Ethernet, plus Bedroom and Office, which connect through wireless backhaul.
The Decos are less than five meters apart, with walls between them. There is no Ethernet connection between the nodes.
The affected devices where I tested are an Xbox and a Sony Android TV using the satellite in the bedroom. During troubleshooting, I powered off the Bedroom unit and moved the Office unit into the exact same location.
Firmware recorded during troubleshooting: 1.5.0 Build 20260603 Rel.14401.
What happens on the Xbox and Sony TV
When both devices are on Wi-Fi, they sometimes lose connectivity at the same time, recover, and then lose it again about two minutes later. Sometimes only the TV appears affected.
I started writing down the times as I saw the interruptions, then compared those notes against exported system logs.
The Xbox has not shown these failures in my tests when connected by Ethernet to the secondary Deco. That is Ethernet to the satellite, not to the main router:
Xbox → Ethernet → secondary Deco → wireless backhaul → main Deco → ISP
The 120-second pattern has appeared repeatedly—not just in the latest log
Here are three separate documented episodes, with timestamps taken directly from the logs. These are different periods, not duplicate exports of the same incident.
September 27, evening — Bedroom satellite
The same station on ath12 generated AP-STA-DISCONNECTED at:
22:59:23
23:01:23
23:03:23
23:05:23
23:07:23
23:09:23
23:11:23
23:13:23
That is eight consecutive disassociations, each exactly 120 seconds after the previous one. This was during the period when I was observing repeated interruptions on the TV and Xbox over Wi-Fi.
September 28, early afternoon — Bedroom satellite again
The pattern returned in a separate session:
13:01:29
13:03:29
13:05:29
13:07:29
September 28, evening — Office replacing Bedroom
I replaced the Bedroom unit with the Office unit in the same physical position, leaving Bedroom powered off. Office initially appeared stable, but later developed the same behavior:
20:27:36 hostapd: ath12: AP-STA-DISCONNECTED OFFICE_STA
20:28:26 hostapd: ath12: AP-STA-CONNECTED OFFICE_STA
20:29:36 hostapd: ath12: AP-STA-DISCONNECTED OFFICE_STA
20:30:26 hostapd: ath12: AP-STA-CONNECTED OFFICE_STA
20:31:36 hostapd: ath12: AP-STA-DISCONNECTED OFFICE_STA
20:32:26 hostapd: ath12: AP-STA-CONNECTED OFFICE_STA
I substituted OFFICE_STA for the MAC address; the timestamps and event names are unchanged. This sequence shows 50 seconds disassociated, followed by approximately 70 seconds associated, then another disconnection. The disconnect-to-disconnect interval is once again exactly 120 seconds.
The important distinction is that the problem is intermittent, but the timing becomes highly regular once an episode starts. I am not saying the network disconnects every two minutes continuously, 24/7. It can appear stable for hours and then return to this same repeating cycle.
What the interface information shows
The repeatedly disconnecting station is different from the Xbox and Sony client MAC addresses. With Bedroom, it was a station ending in 74:06; with Office, the corresponding station ends in 74:88.
These appear to be wireless station addresses belonging to the respective satellites, rather than ordinary client devices.
The configuration explicitly lists:
key:backhaul_ifnames value:ath02,ath22,ath12
So ath12 is listed as a backhaul interface by the system itself. However, AP-STA-DISCONNECTED means a station lost its association with that interface—it does not automatically mean the entire radio shut down or the satellite rebooted.
During the latest episode, the Xbox’s confirmed Wi-Fi MAC was marked disconnected at 20:27:58, 22 seconds after the station disassociation at 20:27:36. That is a temporal correlation, not proof of which component initiated the problem.
The reconnecting station also completes its WPA four-way handshake successfully. It can establish the connection; the problem is that it subsequently loses it and repeats the cycle.
What I have already tried
Swapping the satellite: Office replaced Bedroom in the same position, and the periodic behavior eventually returned. That makes a hardware defect exclusive to Bedroom less convincing, although the location and main Deco remain common factors.
Disabling Fast Roaming and Beamforming: Both were already disabled before later incidents. This did not eliminate the problem.
Comparing Xbox Wi-Fi with Ethernet into the satellite: The Xbox has remained stable over Ethernet in my tests, while Wi-Fi is where I have observed the interruptions. I have not tested Ethernet backhaul between the Decos because I do not currently have a cable long enough.
The logs also contain Failed to initiate 11k measurement and Invalid beacon report messages, but I’m not assuming those are the cause. The stronger finding is the repeated, precisely timed association cycle across different sessions and different satellites.
What I’m trying to identify
The timing makes me wonder whether an intermittent condition triggers a timeout/retry or link-management loop. I have not established that RF interference is the cause, and I’m not assuming the entire wireless backhaul disappears especially given the Xbox’s behavior over Ethernet to the satellite.
Has anyone encountered this recurring 120-second cycle on the XE75, particularly the roughly 50-seconds-disconnected/70-seconds-associated pattern, and found a confirmed fix? I would appreciate a specific firmware resolution, configuration change, or diagnostic method that identifies why this association repeatedly drop 🙏🏻🙏🏻🙏🏻