Gtx 760, native resolution of 4k UHD tv not detected.

[hmttony]

I have a 65" samsung 4k UHD tv and I want to hook my main desktop with a gtx 760 up to it, but osx doesn't properly detect the proper resolution. On windows the system properly detects the tv and outputs a 3840 x 2160 image @ 30hz. Osx on the otherhand thinks the 65" tv is a 120" tv which is capable of taking in 4k DCI signal . As a result the operating system automatically defaults to outputting a 4096 x 2160 image @ 24hz , the tv still accepts the signal and just cuts of the image from the left and right. Under display settings there is no resolution options, only scaling options. Also Forcing the resolution to change using third party programs doesn't work either as the system/program just says unsupported resolution.

Has anyone had this problem or know how to fix it because it's very annoying to have 7% of image cutoff.

Mobo : Ga-z87m-d3h
CPU : i5 4670k
Gpu : Gtx 760

 

[slim.jim]

Try holding option when in the display preferences to see if more resolutions show up.

 

[hmtinc]

Try holding option when in the display preferences to see if more resolutions show up.

Resolution list becomes avalible, but 3840x2160 isn't a option. I managed to get it working with switch resx, but by doing that osx's scaling feature can't be used without reverting back to 4k dci