[SOLVED] DisplayPort Changing to 4K Resolution

[3instein]

I just bought a DisplayPort 1.2 cable. I plugged it in but it won't let me change my resolution to 4K, when I tried to change my resolution to 4K it reverts back to 1440p after few seconds of black screen.

 

[3instein]

Disconnect Hdmi, shouldn't run two display cables it'll just confuse the monitor and pc.

Okay it’s totally the cable.
Update :
It works. Just need to enable the DP 1.2 stream on my monitor. Feels so stupid haha.

 

[boju]

Aah ok is that all it was. Good work.