RX Vega Ubuntu 16.04

Hi friends.

I am one of those lucky /stupid ones who managed to purchase RX Vega 64 for inflated price. All because of AMD promises of love for open source.

One think I did not expect that I will be running my monitor with maximum resolution of 1024 x 768 .

I have installed latest amdgpu-pro drivers, but it did not help.

I have even upgraded Kernel to latest stable 4.12.10 and even to 4.13 rc7 and still I cannot use resolution higher then 1024 x 768 .. really I cannot use computer.

Can someone please point me to instruction how to fix this?

I am embarrassed to go on Monday to work , and after building everyone on Vega and AMD to everyone for months, to tell them this.