#ZBT-1, RCP failure detected

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minor relic
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HI All,

I am trying to setup a Thread Border Router using a new ZBT-1 that I bought.
The ZBT-1 is plugged using the extension cable into my NUC and in proxmox I have mapped the USB port to my HA VM.

I have configured the ZBT-1 as a thread device and the Open Thread Border Router addon was added automatically. I also added the Matter inegration that added the Matter Server addon automatically.

However, I am still unable to add any thread devices to my HA setup.

The OpenThread Border Router addon is very unstable and crashes often.

I am seeing a lot of

00:00:43.012 [W] P-RadioSpinel-: radio tx timeout
00:00:43.012 [W] P-RadioSpinel-: RCP failure detected
00:00:43.012 [W] P-RadioSpinel-: Trying to recover (1/2)
00:00:43.047 [N] P-RadioSpinel-: RCP recovery is done

But sometimes this leads to a second failure and causes the otbr-agent to exit and the addon to shutdown.

00:08:12.506 [W] P-RadioSpinel-: radio tx timeout
00:08:12.506 [W] P-RadioSpinel-: RCP failure detected
00:08:12.506 [W] P-RadioSpinel-: Trying to recover (1/2)
00:08:14.510 [W] P-RadioSpinel-: Wait for response timeout
00:08:14.510 [W] P-RadioSpinel-: RCP failure detected
00:08:14.510 [W] P-RadioSpinel-: Trying to recover (2/2)
00:08:16.537 [W] P-RadioSpinel-: Wait for response timeout
00:08:16.537 [W] P-RadioSpinel-: RCP failure detected
00:08:16.537 [C] P-RadioSpinel-: Too many rcp failures, exiting
00:08:16.537 [C] Platform------: RecoverFromRcpFailure() at radio_spinel.cpp:2063: Failure
[11:51:30] WARNING: otbr-agent exited with code 1 (by signal 0).

Any idea what could cause this? Could the ZBT-1 be faulty or do I need any specific configuration when using proxmox?

minor relic