I have a U100 lock connected to an M2 hub. The hub is connected to Home Assistant vis Matter so I can see and control my U100 lock. Most of the time it works well but at least once a week I stop recieving status in Home Assistant. I don’t know why this is happening but if I connect to the Aqara app and open up my lock, the Matter connection starts working again.
Can anyone help me toubleshoot this?
Thanks
All firmware has been updated.
@sdegonge It sounds like you’re dealing with an intermittent status update issue between your U100 lock, M2 hub, and Home Assistant via Matter—let’s try to troubleshoot this step by step.
First, since the problem involves Matter connectivity, even though your M2 hub isn’t explicitly listed in the Matter-related hub troubleshooting (which covers M3 and M100), some general Matter best practices might apply. For example, ensure there are no multiple Matter Controllers in your setup that aren’t on the same network, as this can cause communication hiccups .
Next, check the communication between your U100 lock and M2 hub. The M2 hub’s FAQ notes that if accessories (like the U100) aren’t responding, verifying their effective range is key—try moving the lock closer to the hub if possible, or check for potential signal interference. The voice prompt “normal link confirmed” (from the accessory manual) can help confirm stable communication .
Since the issue resolves after interacting with the Aqara app, it might also relate to temporary connection drops. Ensure the U100 has sufficient power (low battery can cause intermittent status updates) and that the M2 hub’s network connection is stable—restarting the hub or router occasionally can help maintain connectivity [“content_id”:0, “content_id”:8].
You mentioned firmware is up-to-date, which is great! If these steps don’t resolve it, feel free to share more details (like network setup or recent changes) and the community can help further.
Hope this helps—let us know how it goes!
@sdegonge It sounds like you’re dealing with an intermittent Matter connection issue between your M2 Hub and Home Assistant, which is a bit tricky but let’s try to troubleshoot step by step.
First, since the issue relates to Matter devices losing connection, it’s worth checking if your M2 Hub and Home Assistant (as a Matter Controller) are connected to the same network. If there are multiple Matter Controllers, ensuring they share the same network can help stabilize connections .
Next, even though your firmware is updated, let’s verify the M2 Hub’s basic connectivity. Check if the hub is receiving stable power and has a strong internet connection—intermittent network issues can disrupt Matter status updates. Restarting the hub (unplugging for 10 seconds, then plugging back in) might also help refresh the connection .
Additionally, since the U100 Lock connects through the M2 Hub, ensure the lock is within effective communication range of the hub. If the signal is weak, moving the hub closer or reducing obstacles could improve stability .
It’s interesting that opening the Aqara app resolves the issue—this might be triggering a re-sync between the hub and the Matter network. If the problem persists, monitoring the hub’s status in the Aqara app around the time the issue occurs could help identify if it’s related to temporary disconnections.
Have you noticed any patterns, like the issue happening after a network change or specific time? Sharing more details might help the community brainstorm further!
Hope this helps—let us know how it goes.
I got 3 bot responses. Next time can you consolidate them?
Here are my responses…
One other thing to note: I have 2 U100 locks in my house. The other lock always works over matter. It’s just the other lock that loses connection. Also, the working lock is 15 feet farther from the M2 than the failing lock.
Should I factory reset the U100 and start over?
Looks like the bot went a little crazy on you.
Just confirming when it’s non-responsive is this just in Home Assistant or also in Aqara’s app? I know you didn’t see much in the logs, but wondering if it’s controllable at all there.
Just in Home Assistant. If I open the Aqara app, the lock appears to be fine and the history is not missing any lock/unlock states. It is only matter communications that fails.
Also, when I open the app and go to the lock, the matter connections is restored and I again, can get the status in Home Assistant.
Here’s an update.
The problem persists.
I was mistaken earlier when I said the status loss was in the matter connection. Actually, the Aqara app doesn’t see the status change either.
I also purchased another U100 lock and I have the problem with that one too!
The M2 hub is only 8 feet from the lock and in the line of sight.
So, 2 different locks with the same problem. Note that my front door lock, which works, is also a U100 and that one is about 35 feet from the M2 hub.
I checked all the configurations between my locks and found that the working front door lock has firmware 3.0.0.0032 and the problem locks have firmware aqara 3.0.0.0031.
I am suspecting that the firmware is the problem.
When I try to do a firmware update, it says the it’s already up to date even though I know there is newer firmware.
Why does one of my locks have a higher firmware?
Can I force a firmware update to aqara 3.0.0.0032?