Comment 32 for bug 1536669

Here's a backtrace of ./inputinfo on Unity8 yakkety desktop: http://pastebin.ubuntu.com/23110601/

On that yakkety desktop qml-inputinfo.qml does give one device:
qml: new count of filtered devices: 1
qml: AT Translated Set 2 keyboard QVariant(::QInputDevice::InputTypeFlags) 2
qml: number of mouse and keyboard devices: 1
qml: row count 1
qml: Button, Keyboard,

But Mir's mirin tool gives 6:
1:Power Button:-event3-0-1n keys
2:Power Button:-event2-0-1n keys
3:HD WebCam:-event6-3034-22479 keys
4:Elan Touchscreen:-event4-0-0creen touchscreen
5:Elan Touchpad:-event5-1267-42 touchpad
6:AT Translated Set 2 keyboard:-event0-1-1ed Set 2 keyboard full keyboard

and mirin on krillin gives 3 devices.