[Bug 812940] Re: dbus behaviour change from natty to oneiric: now enables X11 autolaunch

[James Hunt]

As discussed with Colin, it may be better (and safer) to retain this
change since it is now the default in dbus and as such is the new
expected behaviour.

Users who may be affected by this change in auto-launch behaviour can
either:

1) Arrange for dbus to auto-launch on address they specify using the
DBUS_*_BUS_ADDRESS variables.

2) Manually start the dbus-daemon themselves (maybe as a background job
to avoid bug 812913).

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https://bugs.launchpad.net/bugs/812940

Title:
  dbus behaviour change from natty to oneiric: now enables X11
  autolaunch

Status in “dbus” package in Ubuntu:
  New

Bug description:
  The Ubuntu dbus package is not explicitly setting configure options.
  The latest version of lp:ubuntu/dbus appears to have introduced a new
  option (?) which is defaulting to "enabled". The option is "--
  enable-x11-autolaunch":

  ./configure
  grep "^#define DBUS_ENABLE_X11_AUTOLAUNCH" config.h

  (The question mark about is due to the fact that the natty dbus
  package doesn't seem to have a configure.ac script so can't do a
  direct diff).

  The behaviour now is that if you are running in an environment where
  there is no X11, you get this error when you first attempt to use a
  binary/lib that requires dbus:

    Unable to autolaunch a dbus-daemon without a $DISPLAY for X11'

  This behaviour is different to that with natty. Fix would appear to be
  to set "--disable-x11-autolaunch" explicitly (and maybe audit the
  other options to check for changes).

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