[Detector Support]: Frigate Full Access fails to load Google Coral Edge TPU

[initB10r]

Describe the problem you are having

I am trying to run Frigate (Full Access) with Home Assistant 2025.12.5.
Frigate starts without issues as long as the Google Coral Edge TPU is not configured as a detector.

As soon as the Coral TPU is configured, Frigate fails during startup and reports that no EdgeTPU was detected.
On the same system, using the standard (non-Full-Access) Frigate add-on, the Coral TPU works correctly with the same configuration.

Version

0.16.3-9034454

Frigate config file

mqtt:
  enabled: false
  host: 172.16.1.41
  user: mqtt-user
  password: 'myPwd'

detectors:
  coral:
    type: edgetpu
    device: usb

ffmpeg:
  input_args: preset-rtsp-restream
  output_args:
    record: preset-record-generic-audio-copy

go2rtc:
  streams:
    carport_main:
      - ffmpeg:rtsp://admin:myPwd@172.16.0.119:554/h264Preview_01_main#backchannel=0
      - rtsp://admin:myPwd@172.16.0.119:554/h264Preview_01_main
      - ffmpeg:carport_main#audio=opus
    carport_sub:
      - rtsp://admin:myPwd@172.16.0.119:554/h264Preview_01_sub
  webrtc:
    candidates:
      - 172.16.1.41:8555
      - stun:8555

cameras:
  carport_cam: 
    enabled: false
    ffmpeg:
      inputs:
        - path: rtsp://localhost:8554/carport_sub 
          roles:
            - detect
        - path: rtsp://localhost:8554/carport_main
          roles:
            - record
    live:
      streams:
        Main Stream: carport_main
        Sub Stream: carport_sub
#    onvif:
#      host: 172.16.0.119
#      port: 8000
#      user: admin
#      password: "myPwd"
ui:
  timezone: Europe/Berlin
  time_format: 24hour
  strftime_fmt: '%d.%m.%Y- %H:%M'
version: 0.16-0

docker-compose file or Docker CLI command

none

Relevant Frigate log output

###########################################################
### Error when using Full Access variant with Coral TPU ###
###########################################################
2026-01-05 11:49:55.551851593  [2026-01-05 12:49:55] frigate.app                    INFO    : Starting Frigate (0.16.3-9034454)
2026-01-05 11:49:55.558924537  [2026-01-05 12:49:55] frigate.app                    INFO    : Creating directory: /tmp/cache
2026-01-05 11:49:55.562630482  [2026-01-05 12:49:55] peewee_migrate.logs            INFO    : Starting migrations
2026-01-05 11:49:55.564036733  [2026-01-05 12:49:55] peewee_migrate.logs            INFO    : There is nothing to migrate
2026-01-05 11:49:55.576753753  [2026-01-05 12:49:55] frigate.app                    INFO    : Recording process started: 422
2026-01-05 11:49:55.577728488  [2026-01-05 12:49:55] frigate.app                    INFO    : Review process started: 424
2026-01-05 11:49:55.580960288  [2026-01-05 12:49:55] frigate.app                    INFO    : go2rtc process pid: 125
2026-01-05 11:49:55.595993159  [2026-01-05 12:49:55] detector.coral                 INFO    : Starting detection process: 447
2026-01-05 11:49:55.597365235  [2026-01-05 12:49:55] frigate.detectors.plugins.edgetpu_tfl INFO    : Attempting to load TPU as usb
2026-01-05 11:49:55.604636521  [2026-01-05 12:49:55] frigate.app                    INFO    : Output process started: 466
2026-01-05 11:49:55.616332968  [2026-01-05 12:49:55] frigate.app                    INFO    : Camera processor not started for disabled camera carport_cam
2026-01-05 11:49:55.620689030  [2026-01-05 12:49:55] frigate.app                    INFO    : Capture process not started for disabled camera carport_cam
2026-01-05 11:49:55.743198112  [2026-01-05 12:49:55] frigate.api.fastapi_app        INFO    : Starting FastAPI app
2026-01-05 11:49:56.010577454  [2026-01-05 12:49:56] frigate.api.fastapi_app        INFO    : FastAPI started
2026-01-05 11:49:57.516667534  [INFO] Starting go2rtc healthcheck service...
2026-01-05 11:50:20.627288962  [2026-01-05 12:50:20] frigate.detectors.plugins.edgetpu_tfl ERROR   : No EdgeTPU was detected. If you do not have a Coral device yet, you must configure CPU detectors.
2026-01-05 11:50:20.631782455  Process detector:coral:
2026-01-05 11:50:20.631784754  Traceback (most recent call last):
2026-01-05 11:50:20.631786473    File "/usr/local/lib/python3.11/dist-packages/tflite_runtime/interpreter.py", line 166, in load_delegate
2026-01-05 11:50:20.631789989      delegate = Delegate(library, options)
2026-01-05 11:50:20.631791708                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-01-05 11:50:20.631793504    File "/usr/local/lib/python3.11/dist-packages/tflite_runtime/interpreter.py", line 104, in __init__
2026-01-05 11:50:20.631806173      raise ValueError(capture.message)
2026-01-05 11:50:20.631807242  ValueError
2026-01-05 11:50:20.631808489  
2026-01-05 11:50:20.631809855  During handling of the above exception, another exception occurred:
2026-01-05 11:50:20.631810800  
2026-01-05 11:50:20.631811902  Traceback (most recent call last):
2026-01-05 11:50:20.631813291    File "/usr/lib/python3.11/multiprocessing/process.py", line 314, in _bootstrap
2026-01-05 11:50:20.631829293      self.run()
2026-01-05 11:50:20.631830689    File "/opt/frigate/frigate/util/process.py", line 41, in run_wrapper
2026-01-05 11:50:20.631831888      return run(*args, **kwargs)
2026-01-05 11:50:20.631832954             ^^^^^^^^^^^^^^^^^^^^
2026-01-05 11:50:20.631834281    File "/usr/lib/python3.11/multiprocessing/process.py", line 108, in run
2026-01-05 11:50:20.631853354      self._target(*self._args, **self._kwargs)
2026-01-05 11:50:20.631854882    File "/opt/frigate/frigate/object_detection/base.py", line 112, in run_detector
2026-01-05 11:50:20.631856369      object_detector = LocalObjectDetector(detector_config=detector_config)
2026-01-05 11:50:20.631857681                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-01-05 11:50:20.631859289    File "/opt/frigate/frigate/object_detection/base.py", line 57, in __init__
2026-01-05 11:50:20.631860579      self.detect_api = create_detector(detector_config)
2026-01-05 11:50:20.631861796                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-01-05 11:50:20.631875708    File "/opt/frigate/frigate/detectors/__init__.py", line 18, in create_detector
2026-01-05 11:50:20.631876920      return api(detector_config)
2026-01-05 11:50:20.631877959             ^^^^^^^^^^^^^^^^^^^^
2026-01-05 11:50:20.631879362    File "/opt/frigate/frigate/detectors/plugins/edgetpu_tfl.py", line 42, in __init__
2026-01-05 11:50:20.631881106      edge_tpu_delegate = load_delegate("libedgetpu.so.1.0", device_config)
2026-01-05 11:50:20.631882502                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-01-05 11:50:20.631884035    File "/usr/local/lib/python3.11/dist-packages/tflite_runtime/interpreter.py", line 168, in load_delegate
2026-01-05 11:50:20.631902791      raise ValueError('Failed to load delegate from {}\n{}'.format(
2026-01-05 11:50:20.631904164  ValueError: Failed to load delegate from libedgetpu.so.1.0

################################################################
### Working setup using the normal (non-Full-Access) variant ###
################################################################
On the same system, using the standard Frigate add-on (not Full Access), Frigate starts without any issues and the Coral TPU is detected correctly:
2026-01-05 11:04:40.309890661  [2026-01-05 12:04:40] frigate.app                    INFO    : Starting Frigate (0.16.3-9034454)
2026-01-05 11:04:40.317047912  [2026-01-05 12:04:40] frigate.app                    INFO    : Creating directory: /tmp/cache
2026-01-05 11:04:40.321424645  [2026-01-05 12:04:40] peewee_migrate.logs            INFO    : Starting migrations
2026-01-05 11:04:40.321990934  [2026-01-05 12:04:40] peewee_migrate.logs            INFO    : There is nothing to migrate
2026-01-05 11:04:40.334722381  [2026-01-05 12:04:40] frigate.app                    INFO    : Recording process started: 423
2026-01-05 11:04:40.335462010  [2026-01-05 12:04:40] frigate.app                    INFO    : Review process started: 425
2026-01-05 11:04:40.339284173  [2026-01-05 12:04:40] frigate.app                    INFO    : go2rtc process pid: 123
2026-01-05 11:04:40.353114765  [2026-01-05 12:04:40] detector.coral                 INFO    : Starting detection process: 448
2026-01-05 11:04:40.353716688  [2026-01-05 12:04:40] frigate.detectors.plugins.edgetpu_tfl INFO    : Attempting to load TPU as usb
2026-01-05 11:04:40.364607961  [2026-01-05 12:04:40] frigate.app                    INFO    : Output process started: 467
2026-01-05 11:04:40.382395015  [2026-01-05 12:04:40] frigate.app                    INFO    : Camera processor started for carport_cam: 501
2026-01-05 11:04:40.395491738  [2026-01-05 12:04:40] frigate.app                    INFO    : Capture process started for carport_cam: 503
2026-01-05 11:04:40.523655906  [2026-01-05 12:04:40] frigate.api.fastapi_app        INFO    : Starting FastAPI app
2026-01-05 11:04:40.808023631  [2026-01-05 12:04:40] frigate.api.fastapi_app        INFO    : FastAPI started
2026-01-05 11:04:42.316973717  [INFO] Starting go2rtc healthcheck service...
2026-01-05 11:04:43.110941329  [2026-01-05 12:04:43] frigate.detectors.plugins.edgetpu_tfl INFO    : TPU found
2026-01-05 11:04:43.113280936  INFO: Created TensorFlow Lite XNNPACK delegate for CPU.

Install method

Home Assistant Add-on

Object Detector

Coral

Screenshots of the Frigate UI's System metrics pages

none

Any other information that may be helpful

No response

[inkeep-ai-assistant[bot]]

Based on your logs, the Full Access variant of the Frigate add-on is failing to load the EdgeTPU delegate library (libedgetpu.so.1.0), while the standard variant works correctly with the same configuration(1).

The Full Access variant requires proper device access permissions. When running through Home Assistant OS, you may need to ensure both device IDs are mapped correctly(1). The USB Coral has different IDs when it is uninitialized (1a6e:089a Global Unichip Corp.) and initialized (18d1:9302 Google Inc.)(1).

For the Full Access variant specifically, you must ensure both device IDs are mapped, and you may need to disable Protection mode so that the Coral can be accessed(1).

To verify the Coral is detected by your system, you can check using lsusb or the hardware page in HA OS(1). The device will show as 1a6e:089a Global Unichip Corp. until Frigate runs an inference using the Coral, so the identification may not update until after Frigate attempts to detect it(1).

Some common reasons for USB Coral initialization failures include:

• Not enough power (the USB Coral can draw up to 900mA)(1)
• Incorrect device access permissions(1)
• Using a non-USB3 port(1)
• Cable issues(1)

Since the standard Frigate add-on works with your setup, this suggests the Coral hardware itself is functioning correctly, and the issue is specifically related to how the Full Access variant accesses the device.

**

📚 Sources:

1. Troubleshooting EdgeTPU

---

Have another question? Just tag @inkeep.

[NickM-27]

You should just be using the standard addon, full access should only be used if the standard addon causes problems

[initB10r]

Thanks for the reply.

What I don’t understand is why the Full Access add-on appears more restrictive than the standard add-on. On the same system and with the same configuration, the standard add-on detects and uses the Coral TPU correctly, while the Full Access add-on fails to load the EdgeTPU delegate.

Shouldn’t both add-ons support the Coral TPU? From a user perspective, it’s surprising that the Full Access variant works worse in this scenario.

[NickM-27]

They pass the devices differently, and you have to make sure the protection mode is disabled on the full access. Using full access is worse, and only something that should be done if the standard does not work.