[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|xorg-driver-ati@lists.x.org |dri-devel@lists.freedesktop
                   |                            |.org
         QA Contact|xorg-team@lists.x.org       |
          Component|Driver/AMDgpu               |DRM/AMDgpu
            Product|xorg                        |DRI

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Please attach the Xorg log file and dmesg output corresponding to the problem.

This is up to the kernel driver. You could try the amd-staging-4.9 branch of
https://cgit.freedesktop.org/~agd5f/linux/ with CONFIG_DRM_AMD_DC enabled to
see if that works better.

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

--- Comment #2 from Matt Corallo <freedesktop@bluematt.me> ---
Created attachment 129461
  --> https://bugs.freedesktop.org/attachment.cgi?id=129461&action=edit
Xorg.log

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

--- Comment #3 from Matt Corallo <freedesktop@bluematt.me> ---
Created attachment 129462
  --> https://bugs.freedesktop.org/attachment.cgi?id=129462&action=edit
dmesg grep amd, drm, dmar (in case its relevant)

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

--- Comment #4 from Matt Corallo <freedesktop@bluematt.me> ---
Attached (possibly) relevant logs. Will test on the staging branch when I get a
chance (probably in a week or two). I figured the issue would be with the
kernel driver but didnt see an obviously better place to file a bug, should I
have filed on kernel bugzilla?

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #129461|text/x-log                  |text/plain
          mime type|                            |

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #129462|text/x-log                  |text/plain
          mime type|                            |

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
This bugzilla is preferred for kernel driver issues as well. I reassigned this
report to the correct product and component.

Can you also attach the output of xrandr --verbose?

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

--- Comment #6 from Matt Corallo <freedesktop@bluematt.me> ---
Created attachment 129463
  --> https://bugs.freedesktop.org/attachment.cgi?id=129463&action=edit
xrandr --verbose

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

--- Comment #7 from Alex Deucher <alexdeucher@gmail.com> ---
Created attachment 129464
  --> https://bugs.freedesktop.org/attachment.cgi?id=129464&action=edit
possible fix

This patch should fix the issue.

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

--- Comment #8 from Matt Corallo <freedesktop@bluematt.me> ---
Confirmed the attached patch fixes the issue.

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[Bug 99744] Bad crtc detection on Radeon Pro WX 4100

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https://bugs.freedesktop.org/show_bug.cgi?id=99744

Matt Corallo <freedesktop@bluematt.me> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #9 from Matt Corallo <freedesktop@bluematt.me> ---
Fixed in stable/LTS/mainline.

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