Mini display port to HDMI problems

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Hi, up until around November last year my mini display port to HDMI adapter worked perfectly connect my macbook pro to my tv. After updating firmware (cant remember what version) no adapters work. I have tried multipe cables,adapters and tvs, nothing works. It is an early 2011 model. How can a $2000 laptop not be able to display on a tv when my $300 dollar windows laptop does it perfectly??
 

robduckyworth


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Your Mac's Specs
15" MBP, 2.5GHz i7, 750GB, 6770M 1GB, iPad 3, iPhone 4, custom PC
What do you mean "updated the firmware", do mean you upgraded the operating system?
 
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Just an EFI update. One of the adapters doesn't work at all when i mirror displays and flickers every 10-20 seconds on extended display. The other one stopped working completely.
 

robduckyworth


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Location
Reading, UK
Your Mac's Specs
15" MBP, 2.5GHz i7, 750GB, 6770M 1GB, iPad 3, iPhone 4, custom PC
and you've tried this with multiple adapters, and cables? It definitely works on the same display with your Windows laptop?
 

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