How to have external display at native resolution?

[waloshin]

How to have external display at native resolution?

I am using my 2008 Unibody Macbook and under Mountain Lion all I have is display mirroring. The native resolution of the external monitor is 1920x1080P ,but I can only get display mirroring of 1280x800.

 

[VTECaddict]

Turn off display mirroring.

 

[takeshi74]

Bingo. If you're mirroring then it will use the Macbook's display's resolution. If you want to use the external display's native resolution then you'll have to disable mirroring.