x230 4k Display Problem

[overcast]

I am having trouble getting my x230 to display at higher resolutions than 1366x768, they all display at 1280x720.

I tried both updating and rolling back the Intel HD 4000 drivers.
I am using a Phillips 4065UC 4k monitor via displayport to minidisplayport in. I tried the screen with another computer and it displayed fine at the full 4k resolution.

[nitrocaster]

Intel HD4000 supports 2560x1440 maximum. There's no way you can drive 4K monitor with it.

[hhhd1]

try to create a custom resolution of 4k with 30 Hz, not sure if it work though.

[overcast]

>Intel HD4000 supports 2560x1440 maximum. There's no way you can drive 4K monitor with it.

Ok, but the 4k monitor supports 2560x1440. Why when I set it for that will it not display? I am sure its a HD4000 problem and not the monitor. I think it is all displayport limited.

>try to create a custom resolution of 4k with 30 Hz, not sure if it work though.

I got 2048x1152 to display at 1365x768 at 30 hz. Its still doing this 'halving' thing at best in what it displays.

[overcast]

Any ideas? I dont want to have to get rid of the laptop if this is a software fix.