[Bug 107066] [Regression] Tonga can't bring up > 1 display since DC enablement

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107066

            Bug ID: 107066
           Summary: [Regression] Tonga can't bring up > 1 display since DC
                    enablement
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: lyude at redhat.com

Created attachment 140384
  --> https://bugs.freedesktop.org/attachment.cgi?id=140384&action=edit
Aforementioned dmesg

Since DC got enabled for my GPU (R9 380 Tonga from Gigabyte, 22:00.0 VGA
compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Tonga PRO
[Radeon R9 285/380] [1002:6939] (rev f1)) I haven't been able to bring up more
then a single display at a time. More then one display usually results in at
least one display turning on, one other display possibly turning on but only
showing purple and another not turning on, or one display works and the other
two just don't come up at all. Additionally, my dmesg is filled with spam from
amdgpu (see attachment).

I've confirmed this still seems to be present in amdgpu's drm-next-4.19, and it
seems to be caused by the fact that none of the dc_states in the function
mentioned in the WARN_ON() actually have a stream assigned to them. I'm
currently swimming in a sea of bugs though, so any help would be appreciated
:).

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20180628/56392a62/attachment-0001.html>