Q: Monitor scanning issue on new Macbook Air - Acer G247hyu

Bought latest MBA, on El Capitan 10.11.2. Using external monitor: Acer G247HYU which runs at 2560 x 1440, same as Apple Cinema display. I'm using a mini-display to displayport cable.

On my last MBA (same OSX version) the image filled the screen fine. On the new MBA there is underscan (there is a ~8mm black border around the image).

In the display options there are no options for under/over-scanning. Does anyone have a solution for getting the image to fill the display? It's actually not impossible to use, but my assumption is that the underscanning means the pixels are being aliased to fit this box, so not optimal for the screen.

Thanks.

MacBook Air (13-inch Mid 2013), OS X El Capitan (10.11.2)

Posted on Dec 13, 2015 8:08 PM

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Q: Monitor scanning issue on new Macbook Air - Acer G247hyu

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by Brett L,

Brett L Dec 15, 2015 7:29 AM in response to the1stretch
Community Specialists

Dec 15, 2015 7:29 AM in response to the1stretch

Howdy the1stretch,

If you are having an issue with getting undesireable video effects, such as you describe, when using an external monitor with your MacBook Air, I would suggest that you troubleshoot using the steps in this article - Get help with video issues on external displays connected to your Mac.

Thanks for using Apple Support Communities.

Best to you.
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by the1stretch,

the1stretch Dec 15, 2015 6:30 PM in response to Brett L
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Dec 15, 2015 6:30 PM in response to Brett L

Thanks, but that article does not mention under/over-scanning issues at all.
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by Brett L,

Brett L Dec 16, 2015 2:51 PM in response to the1stretch
Community Specialists

Dec 16, 2015 2:51 PM in response to the1stretch

Hi the1stretch,

Thank you for using Apple Support Communities. Due to the nature of the issue you described you may find more information by using another one of Apple's support resources - https://getsupport.apple.com/GetproductgroupList.action.
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Q: Monitor scanning issue on new Macbook Air - Acer G247hyu

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by Brett L,

by the1stretch,

by Brett L,

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