[Bug 199269] New: amdgpu/DC on Kaveri results in corrupt color output on HDMI

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=199269

            Bug ID: 199269
           Summary: amdgpu/DC on Kaveri results in corrupt color output on
                    HDMI
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.16
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: linux@bernd-steinhauser.de
        Regression: No

Created attachment 275079
  --> https://bugzilla.kernel.org/attachment.cgi?id=275079&action=edit
dmesg messages

I'm running amdgpu on my Kaveri for quite some time and it works fine. Nothing
changed with kernel 4.16 there.
For a test, I tried it with activated DC as well:
CONFIG_DRM_AMDGPU=y
# CONFIG_DRM_AMDGPU_SI is not set
CONFIG_DRM_AMDGPU_CIK=y
# CONFIG_DRM_AMDGPU_USERPTR is not set
# CONFIG_DRM_AMDGPU_GART_DEBUGFS is not set
CONFIG_DRM_AMD_ACP=y
CONFIG_DRM_AMD_DC=y
CONFIG_DRM_AMD_DC_PRE_VEGA=y

It did boot fine with this config and on the DVI output, the image looked
normal.
However, on the HDMI output, there was a pink/purple tint as if green was
missing in the output.
In the dmsg output, I can find these messages (full output attached):
Apr 02 15:36:44 orionis kernel: [drm:construct] *ERROR* construct: Invalid
Connector ObjectID from Adapter Service for connector index:1! type 0 expected
3
Apr 02 15:36:44 orionis kernel: [drm:construct] *ERROR* construct: Invalid
Connector ObjectID from Adapter Service for connector index:3! type 0 expected
3
Apr 02 15:36:44 orionis kernel: [drm:construct] *ERROR* construct: Invalid
Connector ObjectID from Adapter Service for connector index:5! type 0 expected
3

There is also this, but I don't know if it could be related:
Apr 02 15:36:44 orionis kernel: ACPI BIOS Error (bug): Failure looking up
[\_SB.ALIB], AE_NOT_FOUND (20180105/psargs-364)
Apr 02 15:36:44 orionis kernel: ACPI Error: Method parse/execution failed
\_SB.PCI0.VGA.ATC0, AE_NOT_FOUND (20180105/psparse-550)
Apr 02 15:36:44 orionis kernel: ACPI Error: Method parse/execution failed
\_SB.PCI0.VGA.ATCS, AE_NOT_FOUND (20180105/psparse-550)

Apart from that, there didn't seem to be any error messages that could be
related to drm at a first glance.

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