Big problems with Zigbee and Matter/Thread devices losing connection

I have 8 Zigbee devices (4 routers, 4 end devices) and 23 Matter/Thread devices connected (IKEA temperature sensors, contact sensors, and a few Kajplats lights).

Everything worked great for almost two months, but during the last few days it has started to have issues over and over again. My Homey Pro 2023 keeps losing connection to devices. I’ve restarted Homey several times — sometimes it helps for a bit, sometimes it doesn’t help at all.

I’ve tried re-planning the mesh networks (which is basically done in blindness, since Homey doesn’t really show much about how devices are connected), but that hasn’t helped either.
How can it be stable for a couple of months and then suddenly become this unstable?

The app (including the desktop version) has been sluggish, especially today. Sometimes I can’t create flows, and sometimes it can’t even find the cards used in existing flows.

There’s a lot of issues right now. Pretty frustrating.
Anyone else experiencing similar problems?

Worth mentioning: I also have a Hue Bridge and IKEA Dirigera, and they are rock solid. Homey isn’t. I initially thought Hue or Dirigera might be causing conflicts with Homey, but then why did everything work fine for two months?

I also changed my 2.4 GHz Wi-Fi to channel 1 just to be safe, since Homey’s Zigbee channel is 24—but that didn’t help.

My Homey Pro is running the latest firmware; version 12.11.0.

Should also mention that my Z-wave devices are rock solid on Homey. Never loses connection. IMO: Too bad that Zigbee and Matter/Thread have taken over the market.

I’m having Zigbee issues too since a few days, mainly Aqara Presence sensors. No connection, crashes Homey and Homey loses cloud connection. Nothing seems to fix it.

When it starts to fail after months without issues, I can only think of

  • interference by other devices or close neighbour devices (you have no control over those transmitting 2.4GHz on ch. 11 for instance).

Or

  • firmware issues in case you recently updated.

Using both Matter-over-Thread & zigbee is not the best idea (Thread & zigbee share the same chip), but when it ran fine for months, that couldn’t suddenly be the issue now.

However, v12.11.0 changelog show changes to Matter, which might be related

If possible revert to firmware v12.10.0 by restoring an offline backup
(it’s best to perform an offline backup prior to updating the firmware).

This way you can determine if the issue could lie in the changes made with Matter.

My neighbors don’t have Wi-Fi networks that should cause interference. I’ve checked using a Wi-Fi analyzer.
The Homey software was updated about two and a half days ago. It’s possible the issues started around then, but I think it began a bit earlier.

I’m aware that the chip is shared between Zigbee and Matter/Thread, but it worked perfectly fine for two months. The only thing I’ve done recently is add a Sonoff temperature sensor six days ago, but since it’s an end device located far away from everything else, it shouldn’t be causing any problems.

I also have very few Zigbee devices, so the load on the chip shouldn’t be particularly high.
I find all of this very strange. It’s extremely unstable.

Edit: I’m adding an Eve Smart Plug (Matter/Thread) tomorrow to see if it makes any difference to the Thread network.

And also, my Homey runs on wifi, quite close to one of my mesh wifi-routers. Perhaps it becomes more stable with ethernet cable?

That’s related imho. I’d temporary remove it to see if anything improves.

Because devices exist which spam the network with updates, choking it.
Far or closeby doesn’t matter, if it’s a member it can influence the network performance.

For the moment both zigbee and matter/thread networks are up and running. No devices disconnected since last reboot.

If it starts to disconnect devices again I will remove the Sonoff temperatur sensor to see if it disturbs the network.

Thanks alot for helping me try to solve this issue.

YW!
By the way, :heart: AiC as well.

Having specifically aqara issues also since a few days, while it worked flawless for many years. The app was just spontaneously uninstalled: present in the app list but not actually there. Ikea matter isues i have all the time since installing two weeks ago. Freezing some specific apps problems since about a year (homeyduino, tuya, harmony), going fron homey 2019 to 2023 no difference.

Same Here, since 12.11.0 aqara is a disaster. But also time Triggered flows don’t start anymore. Looks like this latest update is buggy as hell

Maybe re-installing Homey’s OS might help.

First make a backup (just in case).
Then use the USB tool to install the latest Homey software.

Refer to this knowledge article: Connecting Homey Pro to a PC or Mac with USB.

It’s been stable here since I created this thread. Strangely enough.

I’ve been having all sorts of problems with my matter devices. I have several IKEA MoT devices. They become unresponsive and repairing the connection is a pain in the ass. It takes several tries over a few days to connect them. I have the same issue with 2 Aqara P2 door and window sensors and now some Eve smart plugs.

It feels like I can only add Matter over Thread devices when it feels like it. It will find the device. Then fails to add them to the thread network. My Zigbee devices are pretty rock solid.

I tried adding some SwitchBot candle warmers that are Matter over WiFi and I got one added then my Homey tried to add Thread devices as WiFi devices and wouldn’t find and switch over to the Thread network.

The only Matter devices that seem to work are ones that are actually Aqara devices that are connected to my Aqara M3 Hub via Zigbee then brought over via Matter from the Aqara Hub.

It’s very well possible you’ve reached the limits of the Multi-PAN technology used by Homey.
Multi-PAN uses the same chip & antenna for both Thread and Zigbee.
That seemed to be a nice invention at first, but it appears to introduce more issues than it solves.
I suggest to (temporary) make a choice between both protocols. As zigbee is issue-free, I’d say move Thread to an external Matter+Thread controller, or ditch it altogether ( Matter in general sucks up til now).

About Ikea Matter devices, they seem to be a major setback compared to their fine Zigbee based devices, but possibly only in relation to Homey Thread.

Wifi and Thread are two different protocols. They don’t ‘switch over’

Homey automatically determines if a device is Matter of Thread or Matter over WiFi. But I tried to add a Matter over WiFi device and succeeded but when I tried to repair a matter over Thread it hung up and could figure out it was a Thread not WiFi device.

How did you come to that conclusion?

Homey Pro Newb here.. having same issues with losing connection to ThirdReality ZPI dual outlet. Getting below error for every ThirdReality ZP1 device.

  • Missing Capability Listener: third_reality_dual_plug_switch_capability.

All devices in question where installed using the ThirdReality app in add device. Clean install.. no errors.

All devices in question worked as they should for a day or so…

Have the ThirdReality app on the Homey… restarted

Homey Pro is latest version 13.1 (updated today and restarted)

Changed my 2.5Ghz channel to 1 (from auto) today and restarted

Going to repair each plug one by one… and see if it solves the issues.

Keep you posted… but this is annoying

ok when I got next (within 1 ft) of one of the devices.. I used the homey app to try and turn it on or off… did so fine without errors. I decided to remove it and added back via the repair option under the Maintenance feature via the homey app. Now every device I have mentioned is working. so odd.

Well I may be reading too much into it but the Homey automatically detects if a Matter device uses Thread or WiFi. Every time I’ve added a Thread device Homey will search and the icon will be blue. It connects via Bluetooth the icon is still blue. Then when it tries to add to Thread it has the orange Thread logo.

When I add a Matter device via WiFi it’ll search and connect to the device and the icon switches over to a grey color. It’ll connect via Bluetooth for a moment then ask me the WiFi network and password. Still the icon is grey.

After adding a Matter over WiFi device then trying to add a Matter over Thread device the icon stays grey can’t find the Thread device then times out every time.

Therefore, I guessed that the color of the icons in the pairing process were associated with the respective Thread or WiFi setups. Since the Homey automatically determines which a Matter device uses in my mind it should identify the correct Thread or WiFi setup and the corresponding colors change to the correct setup. And after adding a WiFi device and failing to even connect to a Thread device I assumed my Homey might be having difficulty identifying what device uses Thread and what device uses WiFi. Does that make sense or track?

Granted I do only have the one Homey as a reference point and only a small handful of Matter over WiFi devices so I don’t clog up my WiFi.

I had a couple of Sonoff humidity sensors over Zigbee. So many issues across my whole mesh.

Issues cleared up as soon as I changed to the new IKEA Trimmerflotte and removed any other Zigbee devices.

Anything I use that is Zigbee goes through my Hue Bridge Pro.

Update after a few days….

(4-4)-Has been working great for last few days… I leave town and try to turn off a lamp via the homey app…… Get the error again. Checked all the TR plug devices… same issue again. So my efforts have failed…

Will be back home tomorrow and see if they act different once im on my local network. Again my home is on a Orbie 6e Mesh that does 2.5ghz/5ghz/6ghz bandwidths. Will keep digging… because I cant help myself at this point.. lol.

(old post)-Quick update after 24hrs…. after I changed 2.5Ghz to channel 1 (orbie 6e Mesh) and rebooted it as well as the Homey Pro.. fixed everything as far as I can tell for my Zigbee devices.… all is working as it should since. Will update should it revert.