Bug 28006

Summary:	Message in .xsession-errors - ERROR:dbus.connection:Exception in handler for D-Bus signal
Product:	dbus	Reporter:	Cristian Aravena <caravena>
Component:	python	Assignee:	Simon McVittie <smcv>
Status:	RESOLVED WORKSFORME	QA Contact:	John (J5) Palmieri <johnp>
Severity:	normal
Priority:	medium	Keywords:	NEEDINFO
Version:	1.2.x
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Cristian Aravena 2010-05-06 15:30:58 UTC

Open bug in Launchpad
https://bugs.launchpad.net/bugs/576673

"See .xsession.errors:

ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 214, in maybe_handle_message
    self._handler(*args, **kwargs)
TypeError: signal_handler() takes exactly 1 argument (2 given)
ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 214, in maybe_handle_message
    self._handler(*args, **kwargs)
TypeError: signal_handler() takes exactly 1 argument (2 given)
ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 214, in maybe_handle_message
    self._handler(*args, **kwargs)
TypeError: signal_handler() takes exactly 1 argument (2 given)
** (update-notifier:2007): DEBUG: Skipping reboot required"


.xsession-errors: http://launchpadlibrarian.net/47964319/.xsession-errors

Comment 1 Simon McVittie 2010-05-07 03:18:56 UTC

Someone has defined a function signal_handler() that takes one argument, and connected it to some signal, but that signal was then received with two arguments. Whatever module defines signal_handler() is probably out of sync with the D-Bus API of whatever module emits the signal.

What else could dbus-python do about this, other than logging a warning and carrying on?

(There's a genuine dbus-python bug here too, which is that it doesn't know the process name, so it can't log it.)

Comment 2 Simon McVittie 2012-05-09 07:25:55 UTC

In the absence of further information I'm closing this as WORKSFORME. Please reopen, or open a new bug, if there are further problems.

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