Did Thunderbolt change how display port adapters work?

W1MRK · Mar 3, 2013, 10:02 AM

Hi all.

I have the yellow screen issue on my mid 2010 imac. USing a 32" monitor for my photo worka nd keeping the imac to the side as a second monitor for small tasks and itunes. I went ahead and got a Thunderbolt/display port to hdmi adapter from amazon. Two different ones to be exact, and I am running into a issue on both.

I also have a macbook air late 2011. When I use the display port adapter on my 32" dynex via the imac it will run 1360x768 (native resolution for the Dynex) just fine with the use of SwitchResX4, it looks fantastic actually. However when the macbook air is attached the image seems cloudy and slightly out of focus.

When Thunderbolt hit did something change for the display port functions and quality. I am assuming its Thunderbolt btw as my imac does not have that feature, just the display port.

Thanks.

Mike

chrfr · Mar 3, 2013, 10:41 AM

Quote:

Originally Posted by W1MRK

When Thunderbolt hit did something change for the display port functions and quality.

No, Thunderbolt just passes DisplayPort data straight through.

W1MRK · Mar 3, 2013, 10:51 AM

Wish I could figure this out.

quasinormal · Mar 3, 2013, 10:55 AM

Are the settings in Display Preferences the same for both machines?

costabunny · Mar 3, 2013, 10:57 AM

Have you running a calibration on the macbook for the DP monitor?

W1MRK · Mar 3, 2013, 11:01 AM

Quote:

Originally Posted by quasinormal

Are the settings in Display Preferences the same for both machines?

I am running the imac screen at 1920x1080 60hz, the thunderbolt adapter goes to a Dynex 32" lcd running at 1360x768 60hz native resolution. Controlled via SwitchResX. Even after uninstalling SwitchResX I still get the same fuzzy results. Also getting the fuzzy image fromt he macbook air on a 40" Samsung HDMI

----------

Quote:

Originally Posted by costabunny

Have you running a calibration on the macbook for the DP monitor?

I did not think of that. Can you do a profile for individual screens in display preferences?

costabunny · Mar 3, 2013, 11:17 AM

Quote:

I did not think of that. Can you do a profile for individual screens in display preferences?

Yep - Thats what I had to do for my Iiyama screen thru its hdmi port (but not for the TV which seemed fine on its own)

W1MRK · Mar 3, 2013, 12:16 PM

Quote:

Originally Posted by costabunny

Yep - Thats what I had to do for my Iiyama screen thru its hdmi port (but not for the TV which seemed fine on its own)

Sadly it did not change anything

Mar 3, 2013, 10:02 AM	#1
W1MRK macrumors 6502 Join Date: Dec 2010	Did Thunderbolt change how display port adapters work? Hi all. I have the yellow screen issue on my mid 2010 imac. USing a 32" monitor for my photo worka nd keeping the imac to the side as a second monitor for small tasks and itunes. I went ahead and got a Thunderbolt/display port to hdmi adapter from amazon. Two different ones to be exact, and I am running into a issue on both. I also have a macbook air late 2011. When I use the display port adapter on my 32" dynex via the imac it will run 1360x768 (native resolution for the Dynex) just fine with the use of SwitchResX4, it looks fantastic actually. However when the macbook air is attached the image seems cloudy and slightly out of focus. When Thunderbolt hit did something change for the display port functions and quality. I am assuming its Thunderbolt btw as my imac does not have that feature, just the display port. Thanks. Mike __________________ Homebuilt Windows gaming rigs from 1998 until 2010 when I found happiness
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Mar 3, 2013, 10:51 AM	#3
W1MRK Thread Starter macrumors 6502 Join Date: Dec 2010	Wish I could figure this out. __________________ Homebuilt Windows gaming rigs from 1998 until 2010 when I found happiness
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Mar 3, 2013, 10:57 AM	#5
costabunny macrumors Demi-Goddess Join Date: May 2008 Location: Cancer Free Zone ~ UK	Have you running a calibration on the macbook for the DP monitor? __________________ "When two tribes go to war; ONE is all that you can score!"
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Mar 3, 2013, 10:55 AM	#4
quasinormal macrumors 6502a Join Date: Oct 2007 Location: Sydney, Australia.	Are the settings in Display Preferences the same for both machines?
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