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I am experiencing screen flicker (so bad as to be unusable) from a late 2011 Macbook Pro on an external display connected via a mini DisplayPort to DVI adapter (official Apple version). Is it possible that this is caused by not having a Thunderbolt to DVI adapter? Do I need to update the adapter or should this work?

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What kind of display are you trying to connect to? –  MrDaniel Mar 5 '12 at 14:10
    
its a Dell 2407WFP at 1900 x 1200 –  codecowboy Mar 5 '12 at 16:10

2 Answers 2

up vote 5 down vote accepted

No, such an adapter does not exist and is unnecessary. Since Thunderbolt is backwards compatible with Mini Display port. If you look at accessory options for the MacBook Pro, you will see only the following display output adapters available:

  • Apple Mini DisplayPort to DVI Adapter
  • Apple Mini DisplayPort to Dual-Link DVI Adapter
  • Apple Mini DisplayPort to VGA Adapter

So Mini DisplayPort is the correct adapter type. However, there are two DVI adapters to choose from. It depends on what display your are using and if it needs a single link or dual link DVI connection.

Generally speaking computer displays with a native resolution less than or equal to 1920 x 1200 are single link DVI, while displays larger than 1920 X 1200 are dual link DVI. Check your monitor's specification and requirements to be sure.

If you have the right resolution settings and adapter and the flicker persists I would trouble shoot and rule out each piece of hardware to figure out where the problem lies.

  • In the display
  • With the adapter / cabling
  • With the MacBook Pro
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No, thunderbolt is backwards compatible with MiniDisplay Port. However, if you were using HDMI for example, you would need a newer adapter if you want to carry audio too.

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