[Bug 108806] AMDGPU Failed to read EDID from display

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108806

            Bug ID: 108806
           Summary: AMDGPU Failed to read EDID from display
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: michael.lindman at gmail.com

Created attachment 142526
  --> https://bugs.freedesktop.org/attachment.cgi?id=142526&action=edit
boot log showing EDID failure

When connecting one of my monitors to the system it defaults to 1024x768 and
not the native resolution and grepping through the kernel logs shows that
AMDGPU fails to read the EDID of the display.

[    5.054779] [drm:dc_link_detect [amdgpu]] *ERROR* No EDID read.

The display was working fine as of kernel 4.18.18 with the issues arising upon
4.19.2.

I am using a POLARIS 10 GPU and both displays are connected to DisplayPort with
the Asus PG2780 having the issues with failing to grab the EDID.

DisplayPort-0 LG 25UM65-P
DisplayPort-1 ASUS PG278Q

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