dbus error Post: 302549280

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Top Forums UNIX for Advanced & Expert Users dbus error Post 302549280 by dude2cool on Monday 22nd of August 2011 12:19:27 PM

08-22-2011

Registered User

So reading the man page , looks like the only reason why it won't try to create the ~/.dbus directory is if it attaches to an already existing session. So if "DBUS_SESSION_BUS_ADDRESS" is set, it will just attach itself to it, without invoking a new session, seems like a good way to prevent unnecessary calls.

If you are on redhat, try installing strace, which basically helps you trace the process. Atleast it will confirm if the below is true. Other than that, I have no more ideas on how to debug this. Maybe someone else on the forum has more experience with dbus and can pitch in.

Quote:

If DBUS_SESSION_BUS_ADDRESS is not set for a process that tries to use D-Bus, by default the process will attempt to invoke dbus-launch with the --autolaunch option to start up a new session bus or find the existing bus address on the X display or in a file in ~/.dbus/session-bus/

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dbus-monitor

dbus-monitor(1) 					      General Commands Manual						   dbus-monitor(1)

NAME

       dbus-monitor - debug probe to print message bus messages

SYNOPSIS

       dbus-monitor [--system | --session | --address ADDRESS] [--profile | --monitor] [watch expressions]

DESCRIPTION

       The  dbus-monitor command is used to monitor messages going through a D-Bus message bus.  See http://www.freedesktop.org/software/dbus/ for
       more information about the big picture.

       There are two well-known message buses: the systemwide message bus (installed  on  many	systems  as  the  "messagebus"	service)  and  the
       per-user-login-session  message	bus (started each time a user logs in).  The --system and --session options direct dbus-monitor to monitor
       the system or session buses respectively.  If neither is specified, dbus-monitor monitors the session bus.

       dbus-monitor has two different output modes, the 'classic'-style monitoring mode and profiling mode. The profiling format is a compact for-
       mat  with a single line per message and microsecond-resolution timing information. The --profile and --monitor options select the profiling
       and monitoring output format respectively. If neither is specified, dbus-monitor uses the monitoring output format.

       In order to get dbus-monitor to see the messages you are interested in, you should specify a set of watch expressions as you  would  expect
       to be passed to the dbus_bus_add_match function.

       The message bus configuration may keep dbus-monitor from seeing all messages, especially if you run the monitor as a non-root user.

OPTIONS

       --system
	      Monitor the system message bus.

       --session
	      Monitor the session message bus.	(This is the default.)

       --address ADDRESS
	      Monitor an arbitrary message bus given at ADDRESS.

       --profile
	      Use the profiling output format.

       --monitor
	      Use the monitoring output format.  (This is the default.)

EXAMPLE

       Here is an example of using dbus-monitor to watch for the gnome typing monitor to say things

	 dbus-monitor "type='signal',sender='org.gnome.TypingMonitor',interface='org.gnome.TypingMonitor'"

AUTHOR

       dbus-monitor was written by Philip Blundell.  The profiling output mode was added by Olli Salli.

BUGS

       Please send bug reports to the D-Bus mailing list or bug tracker, see http://www.freedesktop.org/software/dbus/

																   dbus-monitor(1)