Sony X850D not receiving a 1080p singal for 4k mastered option for the pc.

[blackpegasus0]

I am trying to use my TV 4k mastered option for my pc, but it tells me I need a 1080p signal. Refresh rate on tv is 60Hz and so is the pc. The tv and pc are runing at 3840 x 2160 resolution. Can some one help me figure out how to use the 4k mastered option with my pc. Please and ty

Cable: HDMI Cable 6ft - HDMI 2.0 (4K @ 60Hz) Ready - 28AWG Braided Cord - High Speed 18Gbps - Gold Plated Connectors
GC:EVGA GeForce GTX 1070 Ti SC- uses 2.0b hdmi
TV:Sony XBR55X850D 55-Inch 4K Ultra HD Smart TV

 

[hang-the-9]

https/www.sony.com/electronics/support/articles/00044452

Nothing to do with using a computer with that option.

 

[blackpegasus0]

thanks for the reply. I guess the 4k master only works with the blu ray player