test if dbus0x11 is installed before using dbus. Fixes #4715

README.html

@@ -32,12 +32,12 @@ Gajim is a GTK+ app that loves GNOME. You can do 'make' so you don't require gno
 <li>python-crypto to enable End to end encryption</li>
 <li>For idle module, libxss library</li>
 <li>For zeroconf (bonjour), the "enable link-local messaging" checkbox, you need dbus-glib, python-avahi</li>
-<li>dnsutils (or whatever package provides the nslookup binary) for SRV support; if you don't know what that is, you don't need it</li>
+<li>dnsutils (or whatever package provides the nslookup binary) for SRV support</li>
 <li>gtkspell and aspell-LANG where lang is your locale eg. en, fr etc</li>
 <li>GnomePythonExtras 2.10 or above (aka gnome-python-desktop) so you can avoid compiling trayicon and gtkspell</li>
 <li>gnome-python-desktop (for GnomeKeyring support)</li>
 <li>notification-daemon or notify-python (and D-Bus) to get cooler popups</li>
-<li>D-Bus running to have gajim-remote working</li>
+<li>D-Bus running to have gajim-remote working. Some distributions split dbus-x11, which is needed for dbus to work with Gajim.</li>
 <li>python-dbus bindings</li>
 <li>python-sexy to have clickable URLs in chat windows</li>
 <li>python-kerberos to use GSSAPI authentification. Note: version1.1 or higher is required</li>

src/common/dbus_support.py

@@ -40,6 +40,8 @@ try:
 			pass
 	import dbus
 	import dbus.glib
+	# test if dbus-x11 is installed
+	bus = dbus.SessionBus()
 	supported = True # does user have D-Bus bindings?
 except ImportError:
 	supported = False

src/gajim-remote.py

@@ -52,6 +52,8 @@ try:
 	import dbus
 	import dbus.service
 	import dbus.glib
+	# test if dbus-x11 is installed
+	bus = dbus.SessionBus()
 except Exception:
 	print str(exceptions.DbusNotSupported())
 	sys.exit(1)