[Debian Bookworm] ARM64 Nvidia Jetson Orin Nano TypeError: float() argument must be a string or a real number, not 'NoneType' #2477

Summary

• OS: Debian BookWorm
• Architecture: ARM64
• Psutil version: 6.1.0
• Python version: Python 3.13.0
• Type: core

Description

Recently I have moved my Supervised installation of Home Assistant to Nvidia Jetson Orin Nano. And HW System monitor integration failed to start due to this error in psutil

Unexpected error fetching System Monitor update coordinator data Traceback (most recent call last): File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 379, in async_refresh self.data = await self.async_update_data() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/homeassistant/homeassistant/components/systemmonitor/coordinator.py", line 130, in _async_update_data _data = await self.hass.async_add_executor_job(self.update_data) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 58, in run result = self.fn(self.args, *self.kwargs) File "/usr/src/homeassistant/homeassistant/components/systemmonitor/coordinator.py", line 210, in update_data temps = self._psutil.sensors_temperatures() File "/usr/local/lib/python3.13/site-packages/psutil/__init.py", line 2295, in sensors_temperatures rawdict = _psplatform.sensors_temperatures() File "/usr/local/lib/python3.13/site-packages/psutil/_pslinux.py", line 1453, in sensors_temperatures current = float(bcat(path)) / 1000.0 ~^^^^^^^^^^^^ TypeError: float() argument must be a string or a real number, not 'NoneType'

It looks like on this board or kernel some of the thermal zones are unavailable:

sudo grep '' /sys/class/thermal/thermal_zone*/temp /sys/class/thermal/thermal_zone0/temp:48375 grep: /sys/class/thermal/thermal_zone1/temp: Resource temporarily unavailable grep: /sys/class/thermal/thermal_zone2/temp: Resource temporarily unavailable grep: /sys/class/thermal/thermal_zone3/temp: Resource temporarily unavailable grep: /sys/class/thermal/thermal_zone4/temp: Resource temporarily unavailable /sys/class/thermal/thermal_zone5/temp:46593 /sys/class/thermal/thermal_zone6/temp:48218 /sys/class/thermal/thermal_zone7/temp:48312 /sys/class/thermal/thermal_zone8/temp:48375

This causes the bcat to return None at this line: current = float(bcat(path)) / 1000.0 https://github.com/giampaolo/psutil/blob/master/psutil/_pslinux.py#L1453

As a fast fix, I have added ignore of TypeError at https://github.com/giampaolo/psutil/blob/master/psutil/_pslinux.py#L1456 and it looks helped.

Another option is to test bcat return value for a None and skip the sensor in case of None.