I think something has changed with the WeeWX startup (as daemon) under
Trixie. This is the same error, with a solution:
https://github.com/gpiozero/gpiozero/discussions/1153
I logged the working directory at start up of WeeWX as a daemon: *Current
working directory: /*
This seems rather odd!
So, when I change it to */tmp/* in my BCRobotics.py driver, and it works
just fine! (i.e., *os.chdir("/tmp/"*)
I logged the change:
*Current working directory: /New working directory: /tmp*
So, it is fixed (WeeWX runs fine), but I am still confused as to the root
cause! Trixie?
On Wednesday, October 8, 2025 at 11:40:28 AM UTC-4 matthew wall wrote:
> hi david,
>
> perhaps others in this forum could help if you post your driver code, but
> here is a guess:
>
> it looks like your driver is using a file related to gpio (perhaps a
> socket?) whose location is not explicitly specified, so when you run it as
> you the file is in a directory in which you have permissions, but when you
> run it as a daemon (under the control of systemd) the file ends up
> somewhere that you do *not* have permissions.
>
> take a look at your driver code for details about how you do the gpio, and
> see if you can specify the location explicitly, e.g., to /var/tmp or /tmp
>
> m
>
>
> > On Oct 8, 2025, at 10:28, David Enstrom <[email protected]> wrote:
> >
> > Just installed Trixie on my Raspberry Pi 3. I created a virtual
> environment and installed Python, required software, and WeeWX using PIP.
> The weather hardware is from BC Robotics, which has worked beautifully for
> many years. I wrote the driver many years ago.
> >
> > My test app runs fine. I can also run WeeWX manually (i.e., activate my
> weeve virtual environment and then run 'weewxd') and it operates just fine.
> However, if I start weewx using the command 'sudo systemctl start weewx'
> and check the system log it does not start properly. I'm very confused by
> the following error in the log:
> >
> > Oct 08 08:35:08 raspberrypi systemd[1]: Started weewx.service - WeeWX
> weather system.
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Initializing
> weewxd version 5.1.0
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Command line:
> /home/dave/weeve/lib/python3.13/site-packages/weewxd.py
> /home/dave/weewx-data/weewx.conf
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Using Python:
> 3.13.5 (main, Jun 25 2025, 18:55:22) [GCC 14.2.0]
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Located at:
> /home/dave/weeve/bin/python3
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Platform:
> Linux-6.12.47+rpt-rpi-v8-aarch64-with-glibc2.41
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Locale:
> 'en_CA.UTF-8'
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Entry path:
> /home/dave/weeve/lib/python3.13/site-packages/weewxd.py
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: WEEWX_ROOT:
> /home/dave/weewx-data
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Config file:
> /home/dave/weewx-data/weewx.conf
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: User module:
> /home/dave/weewx-data/bin/user
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Debug: 0
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: User: dave
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Group: dave
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO __main__: Groups: adm
> dialout cdrom sudo audio video plugdev games users netdev lpadmin gpio i2c
> spi render input dave
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: INFO weewx.engine: Loading
> station type BCRobotics (user.BCRobotics)
> > Oct 08 08:35:09 raspberrypi python3[4962]: 2025-10-08 08:35:09
> xCreatePipe: Can't set permissions (436) for //.lgd-nfy0, No such file or
> directory
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: Caught
> OSError: [Errno 2] No such file or directory: '.lgd-nfy-3'
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> Traceback (most recent call last):
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/home/dave/weeve/lib/python3.13/site-packages/weewxd.py", line 121, in main
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** engine
> = weewx.engine.StdEngine(config_dict)
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/home/dave/weeve/lib/python3.13/site-packages/weewx/engine.py", line 80,
> in __init__
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> self.setupStation(config_dict)
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/home/dave/weeve/lib/python3.13/site-packages/weewx/engine.py", line 104,
> in setupStation
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> __import__(driver)
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> ~~~~~~~~~~^^^^^^^^
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/home/dave/weewx-data/bin/user/BCRobotics.py", line 29, in <module>
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** import
> board
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/home/dave/weeve/lib/python3.13/site-packages/board.py", line 51, in
> <module>
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** from
> adafruit_blinka.board.raspberrypi.raspi_40pin import *
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/home/dave/weeve/lib/python3.13/site-packages/adafruit_blinka/board/raspberrypi/raspi_40pin.py",
>
> line 6, in <module>
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** from
> adafruit_blinka.microcontroller.bcm283x import pin
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/home/dave/weeve/lib/python3.13/site-packages/adafruit_blinka/microcontroller/bcm283x/pin.py",
>
> line 7, in <module>
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** from
> adafruit_blinka.microcontroller.generic_linux.rpi_gpio_pin import Pin
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/home/dave/weeve/lib/python3.13/site-packages/adafruit_blinka/microcontroller/generic_linux/rpi_gpio_pin.py",
>
> line 6, in <module>
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** from
> RPi import GPIO
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/usr/lib/python3/dist-packages/RPi/GPIO/__init__.py", line 14, in <module>
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** import
> lgpio
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/usr/lib/python3/dist-packages/lgpio.py", line 562, in <module>
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> _notify_thread = _callback_thread()
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: **** File
> "/usr/lib/python3/dist-packages/lgpio.py", line 504, in __init__
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> self._file = open('.lgd-nfy{}'.format(self._notify), 'rb')
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> FileNotFoundError: [Errno 2] No such file or directory: '.lgd-nfy-3'
> > Oct 08 08:35:09 raspberrypi weewxd[4962]: CRITICAL __main__: ****
> Waiting 10 seconds then retrying...
> >
> > HELP!!
> >
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