[Bug 111013] *ERROR* displayport link status failed/*ERROR* clock recovery failed

[Bug 111013] *ERROR* displayport link status failed/*ERROR* clock recovery failed

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111013

            Bug ID: 111013
           Summary: *ERROR* displayport link status failed/*ERROR* clock
                    recovery failed
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: pmenzel+bugs.freedesktop.org@molgen.mpg.de

Created attachment 144652
  --> https://bugs.freedesktop.org/attachment.cgi?id=144652&action=edit
Linux 5.2-rc6 messages (dmesg)

Using Linux 5.2-rc6 and the card below

    $ lspci -nn -s 01:00.0
    01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Oland XT [Radeon HD 8670 / R7 250/350] [1002:6610] (rev 81)

turning off and then back on the MST monitor Dell UP3214Q connected over DP,
the errors below are shown. Sometimes it happens that the display won’t come
back up.

[Wed Jun 26 15:50:41 2019] usb 1-10: USB disconnect, device number 4

→ turned monitor off

next morning turn it on:

[Thu Jun 27 10:39:39 2019] [drm:dce_v6_0_encoder_mode_set [amdgpu]] *ERROR*
Couldn't read Speaker Allocation Data Block: -2
[Thu Jun 27 10:39:39 2019] [drm:dce_v6_0_encoder_mode_set [amdgpu]] *ERROR*
Couldn't read SADs: -2
[Thu Jun 27 10:39:40 2019] [drm:amdgpu_atombios_dp_link_train [amdgpu]] *ERROR*
displayport link status failed
[Thu Jun 27 10:39:40 2019] [drm:amdgpu_atombios_dp_link_train [amdgpu]] *ERROR*
clock recovery failed
[Thu Jun 27 10:39:40 2019] [drm:amdgpu_atombios_dp_link_train [amdgpu]] *ERROR*
displayport link status failed
[Thu Jun 27 10:39:40 2019] [drm:amdgpu_atombios_dp_link_train [amdgpu]] *ERROR*
clock recovery failed

Please help me how to get to the bottom of why the clock recovery failed.

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[Bug 111013] *ERROR* displayport link status failed/*ERROR* clock recovery failed

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https://bugs.freedesktop.org/show_bug.cgi?id=111013

--- Comment #1 from Paul Menzel <pmenzel+bugs.freedesktop.org@molgen.mpg.de> ---
The system was in storage for a while, so no idea, when it started. It does not
seem to happen with 4.19. Earliest Linux version I found in the logs showing
these errors is 5.2-rc2.

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[Bug 111013] *ERROR* displayport link status failed/*ERROR* clock recovery failed

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https://bugs.freedesktop.org/show_bug.cgi?id=111013

Martin Peres <martin.peres@free.fr> changed:

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

--- Comment #2 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/836.

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