Matter over Thread network fell over

SomeHandleThatStartsWithS · 2025-05-13T01:16:18+00:00

I’m completely stumped. After a year and a half of pretty close to rock solid performance of my Matter over Thread network the entire thing took a stumble Saturday after updating HA to the current release. My thread network uses two AppleTV 4K and a HomePod mini as the TBGRs on the preferred network. All three running the current tvOS and HomeOS. The Matter log is flooded with CHIP errors and nodes not responding. The only nodes that were working were thread devices also shared via Apple HomeKit and I could trigger them via the Eve app (or Apple Home). I tried airgapping a couple of my Inovelli White switches and that didn’t help. I reset one and tried repairing, it refused to be readded to HA. All three Apple gateways were powered off for more than an hour. I’ve now reset every Matter over Thread device. I’ve left a couple of Matter over WiFi still online. Those are still responding. The Matter log is still being flooded (just slower) with errors. I’ve not attempted to re-add any of the Thread devices yet. Between all of this I’ve restarted the Matter addon, Thread integration, and rebooted HAOS. Sample log: 2025-05-12 20:26:07.356 (MainThread) INFO [matter_server.server.sdk] Attempting to establish CASE session... (attempt 2 of 2) 2025-05-12 20:27:05.824 (Dummy-2) CHIP_ERROR [chip.native.EM] S:0 M:206183461] (U) Msg Retransmission to 0:0000000000000000 failure (max retries:4) 2025-05-12 20:27:17.217 (Dummy-2) CHIP_ERROR [chip.native.SC] CASESession timed out while waiting for a response from peer . Current state was 1 2025-05-12 20:28:11.497 (Dummy-2) CHIP_ERROR [chip.native.EM] S:0 M:206183462] (U) Msg Retransmission to 0:0000000000000000 failure (max retries:4) 2025-05-12 20:28:26.878 (Dummy-2) CHIP_ERROR [chip.native.SC] CASESession timed out while waiting for a response from peer . Current state was 1 2025-05-12 20:28:26.880 (MainThread) WARNING [matter_server.server.device_controller] Setup for node failed: Unable to establish CASE session with Node 12 2025-05-12 20:28:26.880 (MainThread) WARNING [matter_server.server.device_controller] Node setup not completed after 30 minutes, giving up.