I'm experiencing some strange behaviour of the Unity Dash and the Windows/Super keyboard key.

As far as I know, normal behaviour is:

  • Tap: Open Dash
  • Hold: Show keyboard shortcut overlay

However, the behaviour I'm experiencing is:

  • Tap: Show keyboard shortcut overlay (after a short delay)
  • Double Tap: Open Dash
  • Hold: Show keyboard shortcut overlay

What could cause this, and how do I fix it?

I'm on a fresh 12.10 (Quantal) installation.

  • Have you tried refreshing unity? Refresh Unity – Seth Nov 21 '12 at 16:55
  • @iSeth I ran unity --reset which told me it was deprecated, then restarted Unity, but no change. – Bart van Heukelom Nov 21 '12 at 19:20

Finally, I've found the answer. It turns out that all this time, the "Sticky Keys" option in Universal Access was accidentally* enabled. I just noticed this with Ctrl behaving strangely, and now that I've turned it off, the Dash works as expected.

(* Or I enabled it on purpose, thinking to reap the rewards while not fully knowing the consequences)

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