[Bug 109068] Raven Ridge: backlight is off after suspend

[Bug 109068] Raven Ridge: backlight is off after suspend

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=109068

            Bug ID: 109068
           Summary: Raven Ridge: backlight is off after suspend
           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: samantham@posteo.net

This is an issue on amd-staging-drm-next but not on 4.19.7. I have not tested
other kernels. The issue is that if you put the system in suspend and wake it
up again, the backlight is off. On 4.19 when you resume from suspend the
backlight resumes the same level it was when you put it into suspend.

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[Bug 109068] Raven Ridge: backlight is off after suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=109068

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |harry.wentland@amd.com,
                   |                            |nicholas.kazlauskas@amd.com

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Please attach the output of dmesg in both cases.

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[Bug 109068] Raven Ridge: backlight is off after suspend

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=109068

--- Comment #2 from Samantha McVey <samantham@posteo.net> ---
Created attachment 142837
  --> https://bugs.freedesktop.org/attachment.cgi?id=142837&action=edit
amd-staging-drm-next dmesg

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[Bug 109068] Raven Ridge: backlight is off after suspend

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=109068

--- Comment #3 from Samantha McVey <samantham@posteo.net> ---
Created attachment 142838
  --> https://bugs.freedesktop.org/attachment.cgi?id=142838&action=edit
4.20-rc5 dmesg

In addition, this is what happens to the levels of "brightness" and
"actual_brightness" before and after sleep on amd-staging-drm-next:

Before sleep:
actual_brightness: 12141 brightness: 102
After sleep:
actual_brightness: 0 brightness: 102

On 4.20-rc5 or 4.19 actual_brightness is not at 0 after resume from suspend.

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[Bug 109068] Raven Ridge: backlight is off after suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=109068

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

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

--- Comment #4 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/648.

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