Weird crash after running commands

[rpgdev]

For a while now I've been getting a weird stacktrace when lowering the desk. The command works but afterwards it simply crashes with the output below. How can I fix this?

$ idasen sit
Traceback (most recent call last):
  File "/home/myuser/.local/bin/idasen", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/home/myuser/.local/lib/python3.13/site-packages/idasen/cli.py", line 320, in main
    rc = asyncio.run(func(args))
  File "/usr/lib64/python3.13/asyncio/runners.py", line 195, in run
    return runner.run(main)
           ~~~~~~~~~~^^^^^^
  File "/usr/lib64/python3.13/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
  File "/usr/lib64/python3.13/asyncio/base_events.py", line 725, in run_until_complete
    return future.result()
           ~~~~~~~~~~~~~^^
  File "/home/myuser/.local/lib/python3.13/site-packages/idasen/cli.py", line 209, in move_to
    async with IdasenDesk(args.mac_address, exit_on_fail=True) as desk:
               ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/myuser/.local/lib/python3.13/site-packages/idasen/__init__.py", line 125, in __aexit__
    await self.disconnect()
  File "/home/myuser/.local/lib/python3.13/site-packages/idasen/__init__.py", line 186, in disconnect
    await self._client.disconnect()
  File "/home/myuser/.local/lib/python3.13/site-packages/bleak/__init__.py", line 624, in disconnect
    return await self._backend.disconnect()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/myuser/.local/lib/python3.13/site-packages/bleak/backends/bluezdbus/client.py", line 409, in disconnect
    reply = await self._bus.call(
            ^^^^^^^^^^^^^^^^^^^^^
    ...<6 lines>...
    )
    ^
  File "/home/myuser/.local/lib/python3.13/site-packages/dbus_fast/aio/message_bus.py", line 398, in call
    await future
  File "src/dbus_fast/aio/message_reader.py", line 23, in dbus_fast.aio.message_reader._message_reader
  File "src/dbus_fast/_private/unmarshaller.py", line 856, in dbus_fast._private.unmarshaller.Unmarshaller._unmarshall
  File "src/dbus_fast/_private/unmarshaller.py", line 720, in dbus_fast._private.unmarshaller.Unmarshaller._read_header
  File "src/dbus_fast/_private/unmarshaller.py", line 449, in dbus_fast._private.unmarshaller.Unmarshaller._read_to_pos
  File "src/dbus_fast/_private/unmarshaller.py", line 389, in dbus_fast._private.unmarshaller.Unmarshaller._read_sock_with_fds

$ idasen --version
0.12.0

[newAM]

That is a strange one. I'm guessing it's a deserialization error from dbus? That's going to take some serious spelunking to debug further, that error is occurring several dependencies deep.

[rpgdev]

and I see no option to get a more detailed log from the app from normal functioning. It ultimately does set the desk at the right position but throws this error. And title is inaccurate because it threw this error just now when I ran idasen save stand :/

[rpgdev]

@newAM what I’m noticing now is that these mostly happen when the desk is connected to the computer (Dell laptop), but the instructions say the desk should be connected to the computer, right? If I disconnect it from the Bluetooth menu, the crashes stop happening—at least for a while. I’m monitoring it, trying to pinpoint what could be triggering it.

[rpgdev]

Nah, it kind of happens all the time, like 98% of the time. What I ended up doing was creating a wrapper for the script and sending stderr to /dev/null because the script actually works fine. It doesn't really seem to be something to do with your library since it happens with other scripts written in other languages. Seems like an issue with the python dbus libraries, at least under my configuration (I don't think I have done anything to affect how python works locally). Anyway, below is the script:

#!/usr/bin/env python3

import subprocess
import sys
import os

def main():
    command = ["idasen"] + sys.argv[1:]

    try:
        result = subprocess.run(
            command,
            stdout=subprocess.PIPE,
            stderr=subprocess.DEVNULL,
            text=True, # Decode stdout as text
            check=False # Do not raise an exception for non-zero exit codes
        )

        if result.stdout:
            print(result.stdout, end='')

        sys.exit(result.returncode)

    except FileNotFoundError:
        print(f"Error: The command '{command[0]}' was not found.", file=sys.stderr)
        sys.exit(1)
    except Exception as e:
        print(f"An unexpected error occurred: {e}", file=sys.stderr)
        sys.exit(1)

if __name__ == "__main__":
    main()

[newAM]

Sorry it took a while to check, I did reproduce a crash when the desk was connected, it worked as expected when disconnected, bluetoothctl showing:

Device MAC_REDACTED
	Name: Desk
	Alias: Desk
	Paired: yes
	Bonded: yes
	Trusted: no
	Blocked: no
	Connected: no
	LegacyPairing: no

I think I need to go digging into dbus to figure out why it crashes on disconnection if it was already connected.

[rpgdev]

Thanks for taking the time to check. Fyi I got a similar output from other scripts for the idasen desk.. might be due to an underlying issue in one of the libraries for dbus from what I could tell. The good news is that your script works all of the time even if it produces that ugly output :)