Blank screen on RX 580 with AMDGPU Display Core enabled

Submitted by Kyle De'Vir @Valmar33

Assigned to Default DRI bug account

Link to original bug (#105036)

Description

Created attachment 137260
journalctl output for amdgpu

Kernel version is 4.15.2

When enabling AMDGPU Display Core for my Gigabyte RX 580, I get nothing more than a blank screen on my HDMI monitor.

Attachment 137260, "journalctl output for amdgpu":
kernel-amdgpu.log