[Bug 107333] Display Not Detected If Powered Off When amdgpu.dc=1

https://bugs.freedesktop.org/show_bug.cgi?id=107333

--- Comment #4 from Benjamin Hodgetts ben@xnode.org --- To anyone checking, this is still an issue with versions: Kernel 4.18.16, LLVM 8.0.0, Mesa 18.3.0-devel, XOrg 1.20.2.

Monitor is connected, but powered off:

Screen 0: minimum 320 x 200, current 1024 x 768, maximum 16384 x 16384 DisplayPort-0 disconnected primary (normal left inverted right x axis y axis) DisplayPort-1 disconnected (normal left inverted right x axis y axis) HDMI-A-0 disconnected (normal left inverted right x axis y axis) HDMI-A-1 disconnected (normal left inverted right x axis y axis) DVI-D-0 disconnected (normal left inverted right x axis y axis)