Comment 3 for bug 1493851

This would seem to affect Unity 8 too, and is currently blocking starting up Unity 8 on Qt 5.5 (after hacking around a few other problems):

file:///usr/share/unity8//OrientedShell.qml:147:5: Type Shell unavailable
         Shell {
         ^
file:///usr/share/unity8//Shell.qml:635:9: Type Notifications unavailable
             Notifications {
             ^
file:///usr/share/unity8//Notifications/Notifications.qml:47:15: Type Notification unavailable
         delegate: Notification {
                   ^
file:///usr/share/unity8//Notifications/Notification.qml:85:9: "Audio.audioRole" is not available in QtMultimedia 5.0.
             audioRole: MediaPlayer.alert
             ^