Thunderbolt to TV issues

I have a macbook pro mid 2011 and Im having trouble with the thunderbolt to hdmi connection. I have a Lg tv and when connecting the hdmi the tv screen flickers and I lose audio for about 3 seconds. This happens about every 10 seconds. I assumed it was a refresh rate problem but i've tried different resolutions ( even the hd ones) to no avail as the signal seems to still cut out every 10 sec.
The problem doesn't happen when I run windows 7 through bootcamp making me think there is something wrong with lion. I'm running all the latetest updates for the thunderbolt port and i even have tried resetting my Pram and NVram with no result
Any help is greatly apreciated as I have been searching for a solution for a few days with no success

Thunderbolt/HDMI Connection Issue Solved for Me
I have a MacAir, Sept 2011 edition, Part # MC 969LL/A, running on Mac OS X Lion 10.7.5. On the Mac's partitioned hard drive I use Parallels version 6.0 to run:
a. Windows XP, service pack 3;
b. Windows Media Player, version 11; and
c. Microsoft's Silverlight, Version 5.1.20913.0.
I recently bought a Kanex 10' Mini DisplayPort to HDMI cable which I connected to my older Insignia TV, model E228CZNKW1BYNN.
I connected this cable to my Mac's Thunderbolt outport into the TV's HDMI, opened my Firefox browser, version 24, on the Apple side of my MAC & tried to watch a streaming CBS show of last week's NCIS through the WiFi signal of my home router. My TV screen flashed "Video 5" & turned a medium blue color at the same time that my MAC monitor lost its signal & turned the same color. Nothing happened on either screen , & like others on this forum, I never got the TV nor my Mac screen to display any video or audio.
We quit trying to work the Mac Apple & connected the same cable to my wife's new Acer Aspire V5 operating Windows 8, Windows Media Player, & using Google Chrome's browser. We then seamlessly watched our router's WiFi streaming NCIS show directly on the Insignia monitor without any setup or connectivity issues about video or audio -- while controlling the TV with its remote.
Later I re-connected this cable to my Mac's Thunderbolt outport into the TV's HDMI, opened Parallels, Windowx XP, & took its Firefox browser to the CBS website to watch another NCIS episode. Like on my wife's Acer, we then seamlessly watched the streaming NCIS show directly on the Insignia monitor without any setup or connectivity issues about video or audio -- while controlling the TV with its remote. I then checked my MacBookAir System Preferences & noted:
The "Display" tab was defaulted to resolutions @ 720p with no "underscan".
The"Arrangement" tab was defaulted to "mirror display", and
The "Color" "Display Profiler" was defaulted to "HD 709-A".
My comparative, non-geek, conclusion of the above opeerations:
a. My Kanex cable works very well -- and is not the problem.
b. The Acer (with its AMD Quad Core processor) & Windows 8 and a Chrome browser connected directly & seamlessly to a streaming WiFi signal with no adjustments or tweekings.
c. The MACBOOKAIR Parallels 6 operating "OLD" Windows XP (SP3) with a Firefox browser also connected directly & seamlessly with no adjustments or tweekings. [The defaulted color brightness, balance, & contrast were all better on the TV through my Mac than though my wife's Acer.] and
d. The MacBookAir OS X Lion 10.7.5 must be the source of these connectivity problems -- and APPLE fix these problems -- whatever they are!!
Given my 3 year teck support contract, I'll be calling APPLE soon to discuss the above. If they provide me an APPLE solution, I'll try to post it here later.
Hopes the above info helps!

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Thunderbolt to TV issues

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