LED Cinema Display (27-inch): Keyboard volume and mute controls do not control the volume

In certain situations, after connecting an LED Cinema Display (27-inch) to a Macintosh computer that supports Mini DisplayPort audio, the keyboard volume controls and mute keys may not control the volume on the display. 

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If this issue occurs, you may see this icon when you press a keyboard volume control key. 

Sound control unavailable icon.

Download and install the LED Cinema Display Software Update 1.0.

These Macintosh computers support Mini DisplayPort audio:

  • iMac (21.5-inch, Mid 2010)
  • iMac (27-inch, Mid 2010)
  • MacBook Pro (13-inch, Mid 2010)
  • MacBook Pro (15-inch, Mid 2010)
  • MacBook Pro (17-inch, Mid 2010)
  • MacBook (13-inch, Mid 2010)
  • Mac Pro (Mid 2010)
  • Mac mini (Mid 2010)
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