[Bug 111399] Freeze after suspend/resume with kernel 5.0

[Bug 111399] Freeze after suspend/resume with kernel 5.0

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111399

            Bug ID: 111399
           Summary: Freeze after suspend/resume with kernel 5.0
           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: vl4d1m1r37@gmail.com

Created attachment 145058
  --> https://bugs.freedesktop.org/attachment.cgi?id=145058&action=edit
blackscreen bug log

System: HP 15-bw660ur
GPU: Radeon 520 (Sun XT)

Screen freezes after resuming from suspend. Here is discussion of this bug -
https://bugs.archlinux.org/task/61950.

I made a bisection in branch linux-5.0.y between the tags v5.0-rc1 and 4.20. I
found that there are two bugs with the screen after resuming from suspend. The
first bug is the one that is present in the kernel v.5 now and earlier to
version 5.0-rc1. There is a bug with amdgpu_job_timedout in the log. The second
is the black screen after resuming from suspend and the absence of the
amdgpu_job_timedout error in the log.
The second bug first appears in commit
[262485a50fd4532a8d71165190adc7a0a19bcc9e] drm/amd/display: Expand dc to use
16.16 bit backlight.
The first bug with amdgpu_job_timedout first appears in the commit
[106c7d6148e5aadd394e6701f7e498df49b869d1] drm/amdgpu: abstract the function of
enter/exit safe mode for RLC.
During the bisect searching for the first error, I went through the following
stages sequentially: good (resuming from suspend was successful), error 2,
good, error 2, error 1.

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[Bug 111399] Freeze after suspend/resume with kernel 5.0

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111399

--- Comment #1 from Vladimir <vl4d1m1r37@gmail.com> ---
Created attachment 145059
  --> https://bugs.freedesktop.org/attachment.cgi?id=145059&action=edit
amdgpu_job_timedout error log

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[Bug 111399] Freeze after suspend/resume with kernel 5.0

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111399

Vladimir <vl4d1m1r37@gmail.com> changed:

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

--- Comment #2 from Vladimir <vl4d1m1r37@gmail.com> ---


*** This bug has been marked as a duplicate of bug 110258 ***

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