Flickering lights, ZBT-2 - Zigbee2MQTT | Home Assistant | Page 1

Hi, I’m struggling to get ZBT-2 to work.
I’ve repaired all devices so they have been added successfully, so that part are working,

All lights are flickering, and controlling them is extremely unstable.
I’m running Home Assistant OS on Proxmox with raw access to the host’s USB controller.
I can switch firmware from Home Assistant, and flashing the ZBT-2 always completes successfully.

serial:
  port: /dev/serial/by-id/usb-Nabu_Casa_ZBT-2_E072A1FBF440-if00
  adapter: ember
  baudrate: 460800
  rtscts: true

{"timeout":10000,"disableResponse":false,"disableRecovery":false,"disableDefaultResponse":false,"direction":0,"reservedBits":0,"writeUndiv":false}) failed ({"target":51353,"apsFrame":{"profileId":260,"clusterId":8,"sourceEndpoint":1,"destinationEndpoint":1,"options":4416,"groupId":0,"sequence":51},"zclSequence":24,"commandIdentifier":11} timed out after 10000ms)'
[2026-03-07 09:33:46] error:     z2m: Publish 'set' 'state' to 'Ikea Taklampa' failed: 'Error: ZCL command 0x680ae2fffe355ba8/1 genLevelCtrl.moveToLevelWithOnOff({"level":0,"transtime":100,"optionsMask":0,"optionsOverride":0}, {"timeout":10000,"disableResponse":false,"disableRecovery":false,"disableDefaultResponse":false,"direction":0,"reservedBits":0,"writeUndiv":false}) failed ({"target":51353,"apsFrame":{"profileId":260,"clusterId":8,"sourceEndpoint":1,"destinationEndpoint":1,"options":4416,"groupId":0,"sequence":52},"zclSequence":25,"commandIdentifier":11} timed out after 10000ms)'
...
warning:     zh:ember:uart:ash: Frame(s) in progress cancelled in [010090100842520c12000804000200001ac2020682af7e]
error:     zh:ember:uart:ash: Received ERROR from adapter, with code=RESET_ASSERT.
error:     zh:ember:uart:ash: ASH disconnected | Adapter status: ASH_NCP_FATAL_ERROR
error:     zh:ember:ezsp: Fatal error, status=ASH_NCP_FATAL_ERROR. Last Frame: [FRAME: ID=38:"GET_EUI64" Seq=33 Len=13]

#Flickering lights, ZBT-2 - Zigbee2MQTT