This bug also occurs on Ubuntu 15.10. The following error is reported when "Turn on Recommendations" is selected:
2016-02-13 18:12:54,032 - softwarecenter.backend.login_impl.login_sso - ERROR - _on_credentials_error for Ubuntu One: dbus.Dictionary({dbus.String(u'errtype'): dbus.String(u'GUINotAvailableError'), dbus.String(u'message'): dbus.String(u'Can not find a GUI to present to the user (tried with "(\'ubuntu-sso-login-qt\', \'ubuntu-sso-login-qt\')"). Aborting.')}, signature=dbus.Signature('ss')) () 2016-02-13 18:12:54,033 - softwarecenter.backend.login_impl.login_sso - ERROR - _on_credentials_error for Ubuntu One: dbus.Dictionary({dbus.String(u'errtype'): dbus.String(u'GUINotAvailableError'), dbus.String(u'message'): dbus.String(u'Can not find a GUI to present to the user (tried with "(\'ubuntu-sso-login-qt\', \'ubuntu-sso-login-qt\')"). Aborting.')}, signature=dbus.Signature('ss')) () The display is also grey on grey as mentioned by another poster (see attached image ) - not sure if this is a related issue? Other warnings that are reported on start up are: 2016-02-13 18:04:08,924 - softwarecenter.backend.zeitgeist_logger - WARNING - Support for Zeitgeist disabled 2016-02-13 18:04:08,943 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2016-02-13 18:04:09,103 - softwarecenter.region - WARNING - failed to use geoclue: 'org.freedesktop.DBus.GLib.UnmappedError.GeoclueErrorQuark.Code1: Geoclue master client has no usable Address providers' 2016-02-13 18:04:09,230 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file 2016-02-13 18:04:09,252 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open() /usr/bin/software-center:184: Warning: Source ID 69 was not found when attempting to remove it Gtk.main() /usr/bin/software-center:184: Warning: Source ID 111 was not found when attempting to remove it Gtk.main() ** Attachment added: "Grey on Grey" https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1310475/+attachment/4570664/+files/softwarecenter.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to software-center in Ubuntu. https://bugs.launchpad.net/bugs/1310475 Title: Turn On Recommendation is not working in Ubuntu Gnome 14.04 Status in Ubuntu One Servers: New Status in software-center package in Ubuntu: Triaged Bug description: I'm running the latest update of Ubuntu Gnome 14.04. The following is the output for the software-center command when starting from terminal and trying to turn on the recommendations: 2014-04-21 10:16:02,397 - softwarecenter.backend.login_impl.login_sso - ERROR - _on_credentials_error for Ubuntu One: dbus.Dictionary({dbus.String(u'errtype'): dbus.String(u'GUINotAvailableError'), dbus.String(u'message'): dbus.String(u'Can not find a GUI to present to the user (tried with "(\'ubuntu-sso-login-qt\', \'ubuntu-sso-login-qt\')"). Aborting.')}, signature=dbus.Signature('ss')) () 2014-04-21 10:16:02,398 - softwarecenter.backend.login_impl.login_sso - ERROR - _on_credentials_error for Ubuntu One: dbus.Dictionary({dbus.String(u'errtype'): dbus.String(u'GUINotAvailableError'), dbus.String(u'message'): dbus.String(u'Can not find a GUI to present to the user (tried with "(\'ubuntu-sso-login-qt\', \'ubuntu-sso-login-qt\')"). Aborting.')}, signature=dbus.Signature('ss')) () To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntuone-servers/+bug/1310475/+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