1/4" Black Border Around Monitor

[Jeramiah]

Hi: I have a Mid 2012 13" MBA (2 GHz Intel Core i7/ 8Gig Ram) running Yosemite with an external Dell Ultra Sharp U2715H 2560x1440 monitor. Everything is working fine but there's a 1/4" border around the outside of the LCD that shouldn't be there. I'm not talking about the monitor's black plastic bezel, but an area of black space that should be an active part of the LCD (see attached picture.) I spoke with Dell and they confirmed the LCD should be active all the way to the bezel. They also said the problem is probably with my graphics card which is an Intel HD Graphics 4000 with 1024 MB.

I can live with this, but it would be nice to get the LCD to fire edge to edge and top to bottom. Does anyone have any suggestions beyond resetting the PRAM? Thanks for the help.

 

[motrek]

Hi: I have a Mid 2012 13" MBA (2 GHz Intel Core i7/ 8Gig Ram) running Yosemite with an external Dell Ultra Sharp U2715H 2560x1440 monitor. Everything is working fine but there's a 1/4" border around the outside of the LCD that shouldn't be there. I'm not talking about the monitor's black plastic bezel, but an area of black space that should be an active part of the LCD (see attached picture.) I spoke with Dell and they confirmed the LCD should be active all the way to the bezel. They also said the problem is probably with my graphics card which is an Intel HD Graphics 4000 with 1024 MB.

I can live with this, but it would be nice to get the LCD to fire edge to edge and top to bottom. Does anyone have any suggestions beyond resetting the PRAM? Thanks for the help.

Check out your display preferences and see if you can adjust the underscan. It seems like this might have inadvertently been activated.

 

[Jeramiah]

Check out your display preferences and see if you can adjust the underscan. It seems like this might have inadvertently been activated.

Thx Motrek for replying so quickly but the display settings in Yosemite do not offer a scanning adjustment for an external monitor.

 

[motrek]

Thx Motrek for replying so quickly but the display settings in Yosemite do not offer a scanning adjustment for an external monitor.

It does, but not for all monitors.

Looking closer at your picture, the black part outside of the menu bar clearly isn't part of the LCD panel. There's no backlight bleed through it, so it's just black plastic.

 

[Jeramiah]

Ok Motrek you're right, that area I'm trying to fix is just part of the monitor. Thx for setting me straight on this.