Raspberry Pi 5 + Hailo-8 + NVMe = Undervoltage + HAILO_OUT_OF_PHYSICAL_DEVICES (Frigate)

Hardware
,
1

Hi all, I’m running into what looks like a Hailo device detection issue that only happens when booting from NVMe.

Setup

  • Hardware: Seeed Recomputer AI R2140 (Raspberry Pi 5 + Hailo-8 accelerator)
  • RAM: 16GB
  • OS: Home Assistant OS 17 (HAOS)
  • Frigate: 0.16.4
  • SSD: Silicon Power 128GB NVMe M.2 PCIe Gen3x4 2280 (SP128GBP34A60M28)
  • Works when HAOS boots from: microSD
  • Fails when HAOS boots from: NVMe

Symptom

On NVMe boot I get undervoltage warnings, and Frigate cannot initialize Hailo.

Log excerpt (Frigate)

frigate.detectors.plugins.hailo8l ERROR : Inference error: Could not determine Hailo architecture.

[HailoRT] [error] Failed to create vdevice. there are not enough free devices. requested: 1, found: 0
[HailoRT] [error] CHECK_SUCCESS failed with status=HAILO_OUT_OF_PHYSICAL_DEVICES(74)

[INIT] Failed to initialize HailoAsyncInference: libhailort failed with error: 74 (HAILO_OUT_OF_PHYSICAL_DEVICES)

Questions

  1. Does this error pattern usually mean the Hailo device is not enumerating / not visible to HailoRT (vs being “in use”)?
  2. Are there known issues with Pi 5 + PCIe NVMe + Hailo causing device detection failures?
  3. With HAOS (not Debian/Pi OS), is there any recommended driver/firmware requirement for stable Hailo detection?
  4. Any troubleshooting steps you recommend to confirm whether it’s power/PCIe instability vs driver support?
2

Where is the NVME and the accelerator powered from?
image
is required for tha accelerator alone.
And more for the Pi and more again for the NVME

3

I’m using the 27W USB-C PD Power Supply Black - US Version as recommended but i also used my laptop AC adapter which outputs up to 20v DC with the same result. I saw a very similar problem here but I’m not sure how to implement some of the changes mentioned at the end of the post on HAOS.

update:
I was able to get frigate to run for a while by modifying config.txt and cmdline.txt after reading the mentioned:

config.txt
dtoverlay=pciex1-compat-pi5,no-mip,mmio-hi
cmdline.txt
pcie_aspm=off
However, after running overnight, the device unexpectedly shut down. When I checked the logs, I saw:

2026-02-09 15:16:50.129 frigate kernel: hwmon hwmon4: Undervoltage detected!
2026-02-09 15:16:52.145 frigate kernel: hwmon hwmon4: Voltage normalised