[Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub.

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201183

            Bug ID: 201183
           Summary: AMDGPU Dual displays and only DP screen works after
                    grub.
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.18.*
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: marten.b at gmail.com
        Regression: No

Created attachment 278653
  --> https://bugzilla.kernel.org/attachment.cgi?id=278653&action=edit
kernel 4.18.7 dmesg

Kernel 4.17 is working but the last 2 versions of 4.18.* will not register my
HDMI TV connected to an RX 480. 

I have a Dell LCD on DP and an LG TV on HDMI.

If I unplug the DP display after grub screen the computer will have no display.

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