Problem with display with AMD graphic card

[Fałek]

Recently I encountered a problem that after a week or two since the reboot all displays are going black. There is no signal at all but X server is running. I can even log through ssh with -X option and run any application.

I'm not sure where to find source of the problem or any logs about that. If anyone could help to aim me where to look for the source of this problem, I would be very grateful.

I have installed amdgpu pro 18.30 driver and using W4100 FirePro card with 3.10.0-862.el7.x86_64 kernel.