[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=108608

            Bug ID: 108608
           Summary: Blank screen after KMS with Linux 4.19.0 on Hawaii (R9
                    290)
           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: abortretryfail@gmail.com

Created attachment 142294
  --> https://bugs.freedesktop.org/attachment.cgi?id=142294&action=edit
dmesg spew

With radeon.cik_support=0 and amdgpu.cik_support=1, I get a blank screen on
Linux 4.19.0. This worked fine on 4.18.16. Machine is still accessible via SSH,
but will not shut down successfully.

Using radeon instead of amdgpu is a work-around.

By the function names I'm guessing it's UVD/PowerPlay related, but this is out
of my realm of troubleshooting expertise. 

Attached dmesg snippet with traces and detailed error messages.

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[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

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https://bugs.freedesktop.org/show_bug.cgi?id=108608

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Please attach your full dmesg output.  Can you bisect?

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[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=108608

--- Comment #2 from abortretryfail@gmail.com ---
Sure. I'll see if I can turn off all this 'audit' nonsense that's filling dmesg
with the names of files and users on my PC that I don't want all over the
internet.

Haven't built a kernel from source in ages and never done a git bisect on one.
I'll give it a try though.

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[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=108608

--- Comment #3 from abortretryfail@gmail.com ---
Created attachment 142312
  --> https://bugs.freedesktop.org/attachment.cgi?id=142312&action=edit
Full dmesg output after crash

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[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

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https://bugs.freedesktop.org/show_bug.cgi?id=108608

--- Comment #4 from Alex Deucher <alexdeucher@gmail.com> ---
I think this patch should fix at least some of the issues:
https://patchwork.freedesktop.org/patch/259364/

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[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

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https://bugs.freedesktop.org/show_bug.cgi?id=108608

--- Comment #5 from abortretryfail@gmail.com ---
It works! Mostly.

Everything seems to run fine until after a suspend/resume, after which i get
scrambled gibberish on one monitor (DisplayPort-0) and nothing on the other two
(DVI-D-0,1). 

xrandr --output DVI-D-0 --off --output DVI-D-1 --off gets things looking normal
again on DisplayPort-0, but re-enabling either of those displays doesn't work
and brings back the gibberish.

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[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

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https://bugs.freedesktop.org/show_bug.cgi?id=108608

abortretryfail@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #142294|0                           |1
        is obsolete|                            |

--- Comment #6 from abortretryfail@gmail.com ---
Created attachment 142377
  --> https://bugs.freedesktop.org/attachment.cgi?id=142377&action=edit
dmesg after suspend/resume

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[Bug 108608] Blank screen after KMS with Linux 4.19.0 on Hawaii (R9 290)

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https://bugs.freedesktop.org/show_bug.cgi?id=108608

abortretryfail@gmail.com changed:

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

--- Comment #7 from abortretryfail@gmail.com ---
I guess we might as well close this out, since it sort of works now and the
display corruption is a different issue.

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