[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

            Bug ID: 108704
           Summary: 4.19 amdgpu Tonga powerplay regressions
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: daniel@constexpr.org

Created attachment 142423
  --> https://bugs.freedesktop.org/attachment.cgi?id=142423&action=edit
dmesg output

With Gentoo's 4.19.0 and 4.19.1 kernels, powerplay does not seem to be working
on my Radeon R9 380X card: 3D applications run noticeably slower than before
(but otherwise work fine) and there a number of errors in dmesg during startup
and when trying to switch dpm states via sysfs.

Everything works fine with 4.18.17-gentoo.

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Does this patch fix the issue?
https://patchwork.freedesktop.org/patch/259364/

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #2 from Alex Deucher <alexdeucher@gmail.com> ---
If not, can you bisect?

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #3 from adamcarter3@gmail.com ---
FYI the patch did fix the same issue for me with an R9 380

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

Alex Deucher <alexdeucher@gmail.com> changed:

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

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |garththeisen@hotmail.com

--- Comment #4 from Alex Deucher <alexdeucher@gmail.com> ---
*** Bug 108778 has been marked as a duplicate of this bug. ***

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #5 from Bjorn Helgaas <bhelgaas@google.com> ---
Could somebody please attach "sudo lspci -vvxxx" output for an affected system
(for at least the root port and GPU, or the whole system if that's easier)?

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #6 from Daniel Scharrer <daniel@constexpr.org> ---
Created attachment 142530
  --> https://bugs.freedesktop.org/attachment.cgi?id=142530&action=edit
lspci -vvxx output under 4.18.17-gentoo

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #7 from Laurent Pointecouteau <laurent.pointecouteau@gmail.com> ---
Created attachment 142617
  --> https://bugs.freedesktop.org/attachment.cgi?id=142617&action=edit
dmesg output on Arch Linux

I think I'm affected by a similar issue. I'm using an AMD R9 380 on Arch Linux
with the latest GNOME version. My main troubles are with dual-screen, which
started malfunctioning some days ago - maybe since the 4.19 kernel update,
although I'm unable to downgrade to an older kernel to confirm this.

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

Laurent Pointecouteau <laurent.pointecouteau@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |laurent.pointecouteau@gmail
                   |                            |.com

--- Comment #8 from Laurent Pointecouteau <laurent.pointecouteau@gmail.com> ---
Created attachment 142618
  --> https://bugs.freedesktop.org/attachment.cgi?id=142618&action=edit
sudo lspci -vvxxx on 4.19.2-arch1-1-ARCH

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #9 from Alex Deucher <alexdeucher@gmail.com> ---
Please try the patch in comment 1.

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #10 from Laurent Pointecouteau <laurent.pointecouteau@gmail.com> ---
(In reply to Alex Deucher from comment #9)
> Please try the patch in comment 1.

I've applied the patch and there are no more amdgpu related errors showing up
in dmesg after booting. However, this has not fixed my dual-screen issues; my
HDMI TV displays "no signal" after booting while plugged in my computer, and
when trying to switch display modes using the GNOME control center, my DVI
screen tends to get disabled and display "no signal" too, forcing me to hard
reboot. As far as I can tell, this is the same behavior than before using the
patched kernel. So, my issues may not be related to this bug ticket after all.

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[Bug 108704] 4.19 amdgpu Tonga powerplay regressions

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https://bugs.freedesktop.org/show_bug.cgi?id=108704

--- Comment #11 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Laurent Pointecouteau from comment #10)
> (In reply to Alex Deucher from comment #9)
> > Please try the patch in comment 1.
> 
> I've applied the patch and there are no more amdgpu related errors showing
> up in dmesg after booting. However, this has not fixed my dual-screen
> issues; my HDMI TV displays "no signal" after booting while plugged in my
> computer, and when trying to switch display modes using the GNOME control
> center, my DVI screen tends to get disabled and display "no signal" too,
> forcing me to hard reboot. As far as I can tell, this is the same behavior
> than before using the patched kernel. So, my issues may not be related to
> this bug ticket after all.

Please file a different bug for the display issue.

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