#Cannot connect device to Matter

1 messages · Page 1 of 1 (latest)

arctic crane
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I'm trying to set up my first Matter device - A Meross MT300 thermostat.

I'm running HA in a container, so I've also set up a Matter container. I've got the Matter integration added into HA, and all seems to be good there.

The thermostat does connect to my WiFi - I can see it in my Ubiquiti Network devices pane. However, as I'm walking through the setup process, it gets to a point where it tells me "Can't reach device - make sure your phone is connected to wifi". My phone is also connected to my home WiFi on my 2.4Ghz IOT network.

Do I need anything else set up to communicate with this thing? Do I need any sort of physical router, or is the docker container sufficient?

Yeah, kinda dove into the deep end on this without doing a lot of research first...

arctic crane
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Do I have to set it up through Google Home on my phone then connect to HA? When it asks, I tell it to pick another option and HA is then listed as an option and I select it.

arctic crane
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The stat is functional. I can use the control panel to turn my AC on/off and just turned the heat on and adjusted the temperature, so everything's working there.

coral flame
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I did my Matter device on the HA web page, entering the code manually - that worked

candid nacelle
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that's very strange, the "make sure your phone is connected to wifi" error should only be happening during the first part of commissioning, where the phone is trying to talk directly to the matter device. That error would likely also prevent you from connecting it to google home.

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the usual cause for that is that your phone is unable to resolve mDNS queries which get answered by the matter device. An example of what might cause this is having wifi "broadcast optimization" enabled, which could prevent the wifi aps from forwarding the mDNS queries from one wifi device so they can be answered by a different wifi device.

arctic crane
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Would enabling this help at all? knows just enough about networking to hang himself

image.png
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Here are the mDNS settings that I see:

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arctic crane
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yeesh! looks like setting up ipv6 is something of a nightmare unless you really know what you're doing...

candid nacelle
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i think many matter over wifi devices actually work over ipv4, but regardless, all they should need for ipv6 is the automatically assigned link-local addresses

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(since the matter controller and devices are expected to be on the same network link)

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thread devices are more complex because the thread network is on a separate subnet, so addresses need to be routable.

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but again, handled automatically for devices on the same link, since the thread border routers send out ipv6 router annoucements advertising a prefix to use.

arctic crane
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I did have to enable ipv6 on my UNRAID server to get the Matter container installed. Not looking to argue with the router to get ipv6 running on my whole home network, so happy to hear that I probably won't have to worry about that.

arctic crane
arctic crane
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Going to the Matter integration and adding takes me to the exact same setup screens as I end up at using the Meross app to do the setup. Both of them tell me "manufacturer recommends following their setup process...." and gives me a "continue anyway" or "cancel"
I used Meross' app and this is where it takes me. What gives???

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Guess it doesn't matter, since this doesn't seem to work 🙁

arctic crane
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submitting ticket to Meross. Seems I've got everyone stumpped with this one... 🙁

candid nacelle
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keep in mind that matter devices are (for security reasons) generally only available for pairing for a short time after they're powered on (~15min or so). vendor-specific pairing methods might not have that limitation

arctic crane
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And, I heard back from Meross.
Told me to use their app to pair it, not HomeAssistant.
It seems they watched the little screen recording, but didn't read the text in the message, where I described starting with their app. 😠 I'll make a new screen recording for them this evening when I get home.

pliant gyro
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Are the Matter Controller, your phone, and the new device on the same network subnet?

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Along w/ that network having Internet access

arctic crane
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and yes, the IOT SSID has internet access

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Meross has now seen that their app is sending me to the Matter pairing screen instead of keeping it within their app. Sending it to their tech people. I guess that's a good start.

pliant gyro
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You don't have client device isolation on, do you?

pliant gyro
arctic crane
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No, I do not.

arctic crane