[Desktop Entry]
Type=Application
Name=AT SPI D-Bus Bus
Exec=@libexecdir@/at-spi-bus-launcher --launch-immediately
OnlyShowIn=GNOME;
NoDisplay=true
AutostartCondition=GSETTINGS org.gnome.desktop.interface toolkit-accessibility
X-GNOME-AutoRestart=true
#X-GNOME-Autostart-Phase=Initialization

[Desktop Entry]
Type=Application
Name=AT SPI D-Bus Bus
Exec=@libexecdir@/at-spi-bus-launcher --launch-immediately
OnlyShowIn=GNOME;Unity;
NoDisplay=true
AutostartCondition=GSETTINGS org.gnome.desktop.interface toolkit-accessibility
X-GNOME-AutoRestart=true
#X-GNOME-Autostart-Phase=Initialization

Add Unity to OnlyShowIn value
Add Unity to OnlyShowIn value

https://bugzilla.gnome.org/show_bug.cgi?id=654921
