[Bug 58083] No keyboard previews

[Micah Cowan]

Public bug reported:

In "System" -> "Preferences" -> "Keyboard Preferences", "Layout" tab,
"+Add" button (brings up the dialog)... the frame labeled "Preview"
never shows the currently selected keyboard. Everytime a keyboard is
selected, stderr gets "** (gnome-keyboard-properties:8918): CRITICAL **:
XkbGetKeyboard failed to get keyboard from the server!"

** Affects: control-center (Ubuntu)
     Importance: Untriaged
         Status: Unconfirmed

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No keyboard previews
https://launchpad.net/bugs/58083