Public bug reported: Unfortunately this seems to happen 'out of the blue', then only a log out in returns to working (other than authenticating thru a terminal like in pkexec synaptic which will work
Ex. errors - synaptic - Error creating textual authentication agent: Error opening current controlling terminal for the process (`/dev/tty'): No such device or address Software-center when trying to install a package - softwarecenter.backend - WARNING - _on_trans_error: org.freedesktop.PolicyKit.Error.Failed: ('system-bus-name', {'name': ':1.370'}): org.debian.apt.install-or-remove-packages software sources when trying to change server - dbus.exceptions.DBusException: com.ubuntu.SoftwareProperties.PermissionDeniedByPolicy: com.ubuntu.softwareproperties.applychanges user-accounts when trying to unlock - (gnome-control-center:8358): Gtk-WARNING **: Error acquiring permission: Failed to acquire permission for action-id org.freedesktop.accounts.user-administration ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: dbus 1.4.18-1ubuntu1 ProcVersionSignature: Ubuntu 3.4.0-5.11-generic 3.4.0 Uname: Linux 3.4.0-5-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.1.1-0ubuntu2 Architecture: amd64 Date: Sat Jun 9 11:14:00 2012 InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120603) ProcEnviron: TERM=xterm PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: dbus UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: dbus (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug quantal running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1010919 Title: Authenication window occasionally fails to open, then affects all policykit instances To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dbus/+bug/1010919/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs