Mini Display Port to VGA cable can't detect Samsung SyncMaster 2693HM.
Just conected a Samsung SyncMaster 2693 to my Mac Mini (2.5 CPU mid 2011) with an Apple Mini DisplayPort to VGA adaptor it only sees the monitor as a VGA display and is limited to 1920x1081. I was using the same adaptor with an older Mac Mini (mid 2009) and had no problems getting the full 1920x1200 resolution. I've resarted and reinserted the cables, with no joy. Any ideas?
Looking into my problem more deeply it seems that the adaptor is a fault
As stated by BSteely @ this thread https://discussions.apple.com/message/9447077#9447077 it seems that the 1600 x 1200 @ 85Hz is most likely beyond the capabilities of the DAC onboard the adaptor.
Apple does make reference to this slightly in this FAQ http://support.apple.com/kb/HT3382 stating "The resolution available with the Apple Mini DisplayPort to VGA Adapter is 1920 x 1200. VGA displays that use higher refresh rates (such as 85 Hz) at resolutions of 1600 x 1200 or greater may not generate video properly until you lower the refresh rate."
Begin Rant: "May" As far as my understanding goes the chip inside this adaptor is either designed and the firmware is progamed to support 1600 x 1200 at 85 Hz or it is not. No "May" about it.
The solution is as simple a providing a list of resolutions and refresh rates supported by the adaptor in some sort of "Technical Specifications" not simply the description provided by the overview in the apple store which makes no mention of any limitation other that the requirement of a display port.
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Thanks.Hi DjTimmyM,
Thanks for visiting Apple Support Communities.
Start with the steps below to troubleshoot issues with video out from your MacBook Pro:
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Reset the system
You can reset the Mac's parameter RAM and SMC.
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I have a new 2012 (June) MacBookPro running 10.7.4 with a 2.5 GHz Intel i5 processor. Graphics Intel HD Graphics 4000 512 MB.
I'm trying to connect a Toshiba flat screen TV to the computer via a mini display port to VGA adapter purchased from Apple with the computer. Sometimes I see 5 lines running down the screen. I can get the screen to show on the TV by changing resolutions and refresh rates (1280 x 768 at 60Hz) but the TV shows 5 partial screens on my laptop screen (between those different vertical lines). I feel like I'm looking at the beginnings of an abstract art piece.
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1) Restart the computer in Safe Mode with display attached (shut down and restart while holding down shift key).
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Resetting your computer's PRAM should restore your Macbook Pro's screen appearance.
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18. What is the maximum resolution available for use with the Apple Mini DisplayPort to VGA adapter?
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How do I select additional resolutions on my display?
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To select a different resolution, use the Scaled option. Some additional resolutions may be available when you hold the Option button.
I hope this information helps ....
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