[Bug 102684] Monitor sometimes cuts to black after idling overnight

[Bug 102684] Monitor sometimes cuts to black after idling overnight

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https://bugs.freedesktop.org/show_bug.cgi?id=102684

            Bug ID: 102684
           Summary: Monitor sometimes cuts to black after idling overnight
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: bugs.freedesktop@haasn.xyz

This is a rather difficult issue to reproduce. After leaving my PC idle
overnight (monitor turned off) and waking up the next day, I noticed an odd
issue started happening: The monitor started randomly cutting to black for a
second. It was not entirely unpredictable: it seemed to happen especially when
I triggered a seek in `mpv` -perhaps because this either recreated the
framebuffer or recreated some video textures, I'm not entirely sure. Restarting
X seems to have fixed it. The GPU was in power mode 'auto' overnight.

It sort of reminds me of similar issues I had with the nvidia drivers some
years ago, where leaving them in 'adaptive' performance mode overnight caused
them to fail switching frequencies the next day. Leaving them in 'performance'
mode overnight solved that issue; but it has also been since fixed. But that
was an issue actually related to the performance scaling, whereas this seems
more like an issue with the display connection in general.

I'm not sure where else to take this - I can try reproducing it the next time I
go to sleep, I guess, just to see if it will happen again. Apart from that, I'm
pretty much blind debuggin here.

Xorg version is 1.19.3, mesa version is 17.2, kernel version is 4.12.4, device
is a Sapphire RX 560.

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[Bug 102684] Monitor sometimes cuts to black after idling overnight

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https://bugs.freedesktop.org/show_bug.cgi?id=102684

--- Comment #1 from Niklas Haas <bugs.freedesktop@haasn.xyz> ---
Can't reproduce the cut-to-black issue, after several attempts (with either
'auto' or 'high' performance mode).

I did notice another issue while testing though, which is sort of related: If
leaving the GPU in 'high' performance mode while the display is turned off, it
still goes down to ~300 MHz core clock - except that it never goes back up to
high performance mode. This bug seems extremely similar to the one I had with
nvidia drivers (although nvidia drivers required an X restart, whereas simply
going from 'high' to 'auto' and back clears this issue).

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[Bug 102684] Monitor sometimes cuts to black after idling overnight

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https://bugs.freedesktop.org/show_bug.cgi?id=102684

--- Comment #2 from Niklas Haas <bugs.freedesktop@haasn.xyz> ---
Bug is possibly fixed in the meantime. I think I haven't noticed it for a
while. Closing pre-emptively.

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[Bug 102684] Monitor sometimes cuts to black after idling overnight

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https://bugs.freedesktop.org/show_bug.cgi?id=102684

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

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

--- Comment #3 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/239.

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