Can't get 2160p60 on DP or HDMI 2.0 on my Fatal1ty Z170 Gaming ITX [Ubuntu]

[perig]

Hi,

Not sure if this is a good place to get some help about this but I am pretty new to this so I am trying in multiple places to try to find a solution to my issue.

I have a system with a Fatal1ty Z170 Gaming ITX with an i7 CPU and not additional graphics card. This card has a DP 1.2 and and HDMI 2.0 output.

I have a Teranex Mini HDMI to SDI converter connected to either DP (with a DP to HMDI 2.0 converter) or HDMI. That supports up to UHD 60fps on its HMDI input.

I currently cannot get above 30fps.

Anything on the hardware/firmware side of the motherboard to enable the 60fps on either DP or HMDI?

Below some linux details.

Below is what I get for it plugged on DP1 with the DP to HDMI 2.0 converter (same results direct on HDMI 2.0 output)

DP1 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 708mm x 398mm
   1920x1080i    60.00 +  50.00    59.94  
   4096x2160     24.00    23.98  
   3840x2160     30.00*   25.00    24.00    29.97    23.98  
   1920x1080     60.00    50.00    59.94    30.00    25.00    24.00    29.97    23.98  
   1280x720      60.00    50.00    59.94  
   1440x480i     59.94  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       60.00    59.94  

I do not have access to 3840x2160 above 30 and 4096x2160 above 24 (should have up to 30).

I have the following setup:

$ uname -a
Linux test-desktop 4.4.2-040402-generic #201602171633 SMP Wed Feb 17 21:35:10 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

$ sudo lshw -c video | grep 'configuration'
configuration: driver=i915 latency=0

$ sudo lshw -c video
  *-display               
       description: VGA compatible controller
       product: Sky Lake Integrated Graphics
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 06
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:146 memory:de000000-deffffff memory:c0000000-cfffffff ioport:f000(size=64)

$ modinfo i915 | grep filename
filename:       /lib/modules/4.4.2-040402-generic/kernel/drivers/gpu/drm/i915/i915.ko

I have the latest Intel Drivers 1.4.0 for Ubuntu I believe.

Any help in figuring this out would be very much appreciated.

Thanks.