Thank you Alemann. It seems that you are right. I now skip the LightDM log-in screen when booting and Unity starts up a lot nicer. I only have a problem now one out of maybe ten times, where it usually crashes about nine out of ten times.
It seems that you had exactly the same issues as I had. I went through some of the settings on http://www.tuxgarage.com/2011/04/missing-top- and-side-panels-in-unity.html . It might be related to unity bug #1072329 . ** Changed in: tomboy (Ubuntu) Status: New => Confirmed ** Description changed: - Tomboy usually works. Now the terminal outputs the following on - launching tomboy (and it does not launch): + When logging in through LightDM, the variable $DBUS_SESSION_BUS_ADDRESS + is left empty and Tomboy won't start. The terminal outputs the following + on launching tomboy (and it does not launch): $ tomboy Unhandled Exception: System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null. Parameter name: address - at DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 - at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 - --- End of inner exception stack trace --- - at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 - at DBus.BusG.Init () [0x00000] in <filename unknown>:0 - at Tomboy.GnomeApplication.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 - at Tomboy.Application.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 - at Tomboy.Tomboy.Main (System.String[] args) [0x00000] in <filename unknown>:0 + at DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 + at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 + --- End of inner exception stack trace --- + at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 + at DBus.BusG.Init () [0x00000] in <filename unknown>:0 + at Tomboy.GnomeApplication.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 + at Tomboy.Application.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 + at Tomboy.Tomboy.Main (System.String[] args) [0x00000] in <filename unknown>:0 [ERROR] FATAL UNHANDLED EXCEPTION: System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null. Parameter name: address - at DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 - at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 - --- End of inner exception stack trace --- - at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 - at DBus.BusG.Init () [0x00000] in <filename unknown>:0 - at Tomboy.GnomeApplication.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 - at Tomboy.Application.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 - at Tomboy.Tomboy.Main (System.String[] args) [0x00000] in <filename unknown>:0 + at DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 + at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 + --- End of inner exception stack trace --- + at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 + at DBus.BusG.Init () [0x00000] in <filename unknown>:0 + at Tomboy.GnomeApplication.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 + at Tomboy.Application.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 + at Tomboy.Tomboy.Main (System.String[] args) [0x00000] in <filename unknown>:0 $ ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: tomboy 1.8.0-1ubuntu1.1.1 ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17 Uname: Linux 3.0.0-16-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 1.23-0ubuntu4 Architecture: amd64 Date: Sat Mar 3 21:54:06 2012 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) ProcEnviron: - LANGUAGE=da_DK:da - PATH=(custom, no user) - LANG=da_DK.utf8 - SHELL=/bin/bash + LANGUAGE=da_DK:da + PATH=(custom, no user) + LANG=da_DK.utf8 + SHELL=/bin/bash SourcePackage: tomboy UpgradeStatus: Upgraded to oneiric on 2011-12-17 (77 days ago) - --- + --- ApportVersion: 2.6.1-0ubuntu9 Architecture: amd64 DistroRelease: Ubuntu 12.10 InstallationDate: Installed on 2010-11-13 (769 days ago) InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) MarkForUpload: True NonfreeKernelModules: fglrx Package: tomboy 1.12.0-1ubuntu1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1 Tags: quantal running-unity Uname: Linux 3.5.0-21-generic x86_64 UpgradeStatus: Upgraded to quantal on 2012-10-19 (63 days ago) UserGroups: adm admin cdrom dialout lpadmin mythtv netdev plugdev sambashare vboxusers ** Summary changed: - Crashes on launch - Unable to open the session message bus. ---> ArgumentNullException + $DBUS_SESSION_BUS_ADDRESS left empty. Unable to open the session message bus. ---> ArgumentNullException ** Also affects: lightdm Importance: Undecided Status: New ** Changed in: lightdm Status: New => Confirmed ** Description changed: When logging in through LightDM, the variable $DBUS_SESSION_BUS_ADDRESS - is left empty and Tomboy won't start. The terminal outputs the following - on launching tomboy (and it does not launch): + is left empty and Tomboy won't start (see comment #9 below). The + terminal outputs the following on launching tomboy (and it does not + launch): $ tomboy Unhandled Exception: System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null. Parameter name: address at DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 at DBus.BusG.Init () [0x00000] in <filename unknown>:0 at Tomboy.GnomeApplication.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 at Tomboy.Application.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 at Tomboy.Tomboy.Main (System.String[] args) [0x00000] in <filename unknown>:0 [ERROR] FATAL UNHANDLED EXCEPTION: System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null. Parameter name: address at DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 at DBus.BusG.Init () [0x00000] in <filename unknown>:0 at Tomboy.GnomeApplication.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 at Tomboy.Application.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 at Tomboy.Tomboy.Main (System.String[] args) [0x00000] in <filename unknown>:0 $ ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: tomboy 1.8.0-1ubuntu1.1.1 ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17 Uname: Linux 3.0.0-16-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 1.23-0ubuntu4 Architecture: amd64 Date: Sat Mar 3 21:54:06 2012 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) ProcEnviron: LANGUAGE=da_DK:da PATH=(custom, no user) LANG=da_DK.utf8 SHELL=/bin/bash SourcePackage: tomboy UpgradeStatus: Upgraded to oneiric on 2011-12-17 (77 days ago) --- ApportVersion: 2.6.1-0ubuntu9 Architecture: amd64 DistroRelease: Ubuntu 12.10 InstallationDate: Installed on 2010-11-13 (769 days ago) InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) MarkForUpload: True NonfreeKernelModules: fglrx Package: tomboy 1.12.0-1ubuntu1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1 Tags: quantal running-unity Uname: Linux 3.5.0-21-generic x86_64 UpgradeStatus: Upgraded to quantal on 2012-10-19 (63 days ago) UserGroups: adm admin cdrom dialout lpadmin mythtv netdev plugdev sambashare vboxusers -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to tomboy in Ubuntu. https://bugs.launchpad.net/bugs/945858 Title: $DBUS_SESSION_BUS_ADDRESS left empty. Unable to open the session message bus. ---> ArgumentNullException Status in Light Display Manager: Confirmed Status in “tomboy” package in Ubuntu: Confirmed Bug description: When logging in through LightDM, the variable $DBUS_SESSION_BUS_ADDRESS is left empty and Tomboy won't start (see comment #9 below). The terminal outputs the following on launching tomboy (and it does not launch): $ tomboy Unhandled Exception: System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null. Parameter name: address at DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 at DBus.BusG.Init () [0x00000] in <filename unknown>:0 at Tomboy.GnomeApplication.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 at Tomboy.Application.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 at Tomboy.Tomboy.Main (System.String[] args) [0x00000] in <filename unknown>:0 [ERROR] FATAL UNHANDLED EXCEPTION: System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null. Parameter name: address at DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 at DBus.BusG.Init () [0x00000] in <filename unknown>:0 at Tomboy.GnomeApplication.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 at Tomboy.Application.Initialize (System.String locale_dir, System.String display_name, System.String process_name, System.String[] args) [0x00000] in <filename unknown>:0 at Tomboy.Tomboy.Main (System.String[] args) [0x00000] in <filename unknown>:0 $ ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: tomboy 1.8.0-1ubuntu1.1.1 ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17 Uname: Linux 3.0.0-16-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 1.23-0ubuntu4 Architecture: amd64 Date: Sat Mar 3 21:54:06 2012 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) ProcEnviron: LANGUAGE=da_DK:da PATH=(custom, no user) LANG=da_DK.utf8 SHELL=/bin/bash SourcePackage: tomboy UpgradeStatus: Upgraded to oneiric on 2011-12-17 (77 days ago) --- ApportVersion: 2.6.1-0ubuntu9 Architecture: amd64 DistroRelease: Ubuntu 12.10 InstallationDate: Installed on 2010-11-13 (769 days ago) InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) MarkForUpload: True NonfreeKernelModules: fglrx Package: tomboy 1.12.0-1ubuntu1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1 Tags: quantal running-unity Uname: Linux 3.5.0-21-generic x86_64 UpgradeStatus: Upgraded to quantal on 2012-10-19 (63 days ago) UserGroups: adm admin cdrom dialout lpadmin mythtv netdev plugdev sambashare vboxusers To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/945858/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
